81071820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:245

約数の個数: 192

約数和(自身を含む): 270950400

約数和(自身を除く): 189878580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 31, 36, 45, 54, 58, 60, 62, 87, 90, 93, 108, 116, 124, 135, 145, 155, 167, 174, 180, 186, 261, 270, 279, 290, 310, 334, 348, 372, 435, 465, 501, 522, 540, 558, 580, 620, 668, 783, 835, 837, 870, 899, 930, 1002, 1044, 1116, 1305, 1395, 1503, 1566, 1670, 1674, 1740, 1798, 1860, 2004, 2505, 2610, 2697, 2790, 3006, 3132, 3340, 3348, 3596, 3915, 4185, 4495, 4509, 4843, 5010, 5177, 5220, 5394, 5580, 6012, 7515, 7830, 8091, 8370, 8990, 9018, 9686, 10020, 10354, 10788, 13485, 14529, 15030, 15531, 15660, 16182, 16740, 17980, 18036, 19372, 20708, 22545, 24215, 24273, 25885, 26970, 29058, 30060, 31062, 32364, 40455, 43587, 45090, 46593, 48430, 48546, 51770, 53940, 58116, 62124, 72645, 77655, 80910, 87174, 90180, 93186, 96860, 97092, 103540, 121365, 130761, 139779, 145290, 150133, 155310, 161820, 174348, 186372, 217935, 232965, 242730, 261522, 279558, 290580, 300266, 310620, 435870, 450399, 465930, 485460, 523044, 559116, 600532, 653805, 698895, 750665, 871740, 900798, 931860, 1307610, 1351197, 1397790, 1501330, 1801596, 2251995, 2615220, 2702394, 2795580, 3002660, 4053591, 4503990, 5404788, 6755985, 8107182, 9007980, 13511970, 16214364, 20267955, 27023940, 40535910, 81071820]

約数ペア:

[(1, 81071820), (2, 40535910), (3, 27023940), (4, 20267955), (5, 16214364), (6, 13511970), (9, 9007980), (10, 8107182), (12, 6755985), (15, 5404788), (18, 4503990), (20, 4053591), (27, 3002660), (29, 2795580), (30, 2702394), (31, 2615220), (36, 2251995), (45, 1801596), (54, 1501330), (58, 1397790), (60, 1351197), (62, 1307610), (87, 931860), (90, 900798), (93, 871740), (108, 750665), (116, 698895), (124, 653805), (135, 600532), (145, 559116), (155, 523044), (167, 485460), (174, 465930), (180, 450399), (186, 435870), (261, 310620), (270, 300266), (279, 290580), (290, 279558), (310, 261522), (334, 242730), (348, 232965), (372, 217935), (435, 186372), (465, 174348), (501, 161820), (522, 155310), (540, 150133), (558, 145290), (580, 139779), (620, 130761), (668, 121365), (783, 103540), (835, 97092), (837, 96860), (870, 93186), (899, 90180), (930, 87174), (1002, 80910), (1044, 77655), (1116, 72645), (1305, 62124), (1395, 58116), (1503, 53940), (1566, 51770), (1670, 48546), (1674, 48430), (1740, 46593), (1798, 45090), (1860, 43587), (2004, 40455), (2505, 32364), (2610, 31062), (2697, 30060), (2790, 29058), (3006, 26970), (3132, 25885), (3340, 24273), (3348, 24215), (3596, 22545), (3915, 20708), (4185, 19372), (4495, 18036), (4509, 17980), (4843, 16740), (5010, 16182), (5177, 15660), (5220, 15531), (5394, 15030), (5580, 14529), (6012, 13485), (7515, 10788), (7830, 10354), (8091, 10020), (8370, 9686), (8990, 9018)]