21510900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:311

約数の個数: 144

約数和(自身を含む): 71662080

約数和(自身を除く): 50151180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 31, 36, 45, 50, 54, 60, 62, 75, 90, 93, 100, 108, 124, 135, 150, 155, 180, 186, 225, 257, 270, 279, 300, 310, 372, 450, 465, 514, 540, 558, 620, 675, 771, 775, 837, 900, 930, 1028, 1116, 1285, 1350, 1395, 1542, 1550, 1674, 1860, 2313, 2325, 2570, 2700, 2790, 3084, 3100, 3348, 3855, 4185, 4626, 4650, 5140, 5580, 6425, 6939, 6975, 7710, 7967, 8370, 9252, 9300, 11565, 12850, 13878, 13950, 15420, 15934, 16740, 19275, 20925, 23130, 23901, 25700, 27756, 27900, 31868, 34695, 38550, 39835, 41850, 46260, 47802, 57825, 69390, 71703, 77100, 79670, 83700, 95604, 115650, 119505, 138780, 143406, 159340, 173475, 199175, 215109, 231300, 239010, 286812, 346950, 358515, 398350, 430218, 478020, 597525, 693900, 717030, 796700, 860436, 1075545, 1195050, 1434060, 1792575, 2151090, 2390100, 3585150, 4302180, 5377725, 7170300, 10755450, 21510900]

約数ペア:

[(1, 21510900), (2, 10755450), (3, 7170300), (4, 5377725), (5, 4302180), (6, 3585150), (9, 2390100), (10, 2151090), (12, 1792575), (15, 1434060), (18, 1195050), (20, 1075545), (25, 860436), (27, 796700), (30, 717030), (31, 693900), (36, 597525), (45, 478020), (50, 430218), (54, 398350), (60, 358515), (62, 346950), (75, 286812), (90, 239010), (93, 231300), (100, 215109), (108, 199175), (124, 173475), (135, 159340), (150, 143406), (155, 138780), (180, 119505), (186, 115650), (225, 95604), (257, 83700), (270, 79670), (279, 77100), (300, 71703), (310, 69390), (372, 57825), (450, 47802), (465, 46260), (514, 41850), (540, 39835), (558, 38550), (620, 34695), (675, 31868), (771, 27900), (775, 27756), (837, 25700), (900, 23901), (930, 23130), (1028, 20925), (1116, 19275), (1285, 16740), (1350, 15934), (1395, 15420), (1542, 13950), (1550, 13878), (1674, 12850), (1860, 11565), (2313, 9300), (2325, 9252), (2570, 8370), (2700, 7967), (2790, 7710), (3084, 6975), (3100, 6939), (3348, 6425), (3855, 5580), (4185, 5140), (4626, 4650)]