78940980

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:500

約数の個数: 144

約数和(自身を含む): 255615360

約数和(自身を除く): 176674380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 81, 90, 108, 111, 135, 148, 162, 180, 185, 222, 243, 270, 324, 333, 370, 405, 439, 444, 486, 540, 555, 666, 740, 810, 878, 972, 999, 1110, 1215, 1317, 1332, 1620, 1665, 1756, 1998, 2195, 2220, 2430, 2634, 2997, 3330, 3951, 3996, 4390, 4860, 4995, 5268, 5994, 6585, 6660, 7902, 8780, 8991, 9990, 11853, 11988, 13170, 14985, 15804, 16243, 17982, 19755, 19980, 23706, 26340, 29970, 32486, 35559, 35964, 39510, 44955, 47412, 48729, 59265, 59940, 64972, 71118, 79020, 81215, 89910, 97458, 106677, 118530, 142236, 146187, 162430, 177795, 179820, 194916, 213354, 237060, 243645, 292374, 324860, 355590, 426708, 438561, 487290, 533385, 584748, 711180, 730935, 877122, 974580, 1066770, 1315683, 1461870, 1754244, 2133540, 2192805, 2631366, 2923740, 3947049, 4385610, 5262732, 6578415, 7894098, 8771220, 13156830, 15788196, 19735245, 26313660, 39470490, 78940980]

約数ペア:

[(1, 78940980), (2, 39470490), (3, 26313660), (4, 19735245), (5, 15788196), (6, 13156830), (9, 8771220), (10, 7894098), (12, 6578415), (15, 5262732), (18, 4385610), (20, 3947049), (27, 2923740), (30, 2631366), (36, 2192805), (37, 2133540), (45, 1754244), (54, 1461870), (60, 1315683), (74, 1066770), (81, 974580), (90, 877122), (108, 730935), (111, 711180), (135, 584748), (148, 533385), (162, 487290), (180, 438561), (185, 426708), (222, 355590), (243, 324860), (270, 292374), (324, 243645), (333, 237060), (370, 213354), (405, 194916), (439, 179820), (444, 177795), (486, 162430), (540, 146187), (555, 142236), (666, 118530), (740, 106677), (810, 97458), (878, 89910), (972, 81215), (999, 79020), (1110, 71118), (1215, 64972), (1317, 59940), (1332, 59265), (1620, 48729), (1665, 47412), (1756, 44955), (1998, 39510), (2195, 35964), (2220, 35559), (2430, 32486), (2634, 29970), (2997, 26340), (3330, 23706), (3951, 19980), (3996, 19755), (4390, 17982), (4860, 16243), (4995, 15804), (5268, 14985), (5994, 13170), (6585, 11988), (6660, 11853), (7902, 9990), (8780, 8991)]