221539240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1319}}^1$

素因数の和:1379

約数の個数: 128

約数和(自身を含む): 598752000

約数和(自身を除く): 377212760

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 19, 20, 26, 34, 38, 40, 52, 65, 68, 76, 85, 95, 104, 130, 136, 152, 170, 190, 221, 247, 260, 323, 340, 380, 442, 494, 520, 646, 680, 760, 884, 988, 1105, 1235, 1292, 1319, 1615, 1768, 1976, 2210, 2470, 2584, 2638, 3230, 4199, 4420, 4940, 5276, 6460, 6595, 8398, 8840, 9880, 10552, 12920, 13190, 16796, 17147, 20995, 22423, 25061, 26380, 33592, 34294, 41990, 44846, 50122, 52760, 68588, 83980, 85735, 89692, 100244, 112115, 125305, 137176, 167960, 171470, 179384, 200488, 224230, 250610, 291499, 325793, 342940, 426037, 448460, 501220, 582998, 651586, 685880, 852074, 896920, 1002440, 1165996, 1303172, 1457495, 1628965, 1704148, 2130185, 2331992, 2606344, 2914990, 3257930, 3408296, 4260370, 5538481, 5829980, 6515860, 8520740, 11076962, 11659960, 13031720, 17041480, 22153924, 27692405, 44307848, 55384810, 110769620, 221539240]

約数ペア:

[(1, 221539240), (2, 110769620), (4, 55384810), (5, 44307848), (8, 27692405), (10, 22153924), (13, 17041480), (17, 13031720), (19, 11659960), (20, 11076962), (26, 8520740), (34, 6515860), (38, 5829980), (40, 5538481), (52, 4260370), (65, 3408296), (68, 3257930), (76, 2914990), (85, 2606344), (95, 2331992), (104, 2130185), (130, 1704148), (136, 1628965), (152, 1457495), (170, 1303172), (190, 1165996), (221, 1002440), (247, 896920), (260, 852074), (323, 685880), (340, 651586), (380, 582998), (442, 501220), (494, 448460), (520, 426037), (646, 342940), (680, 325793), (760, 291499), (884, 250610), (988, 224230), (1105, 200488), (1235, 179384), (1292, 171470), (1319, 167960), (1615, 137176), (1768, 125305), (1976, 112115), (2210, 100244), (2470, 89692), (2584, 85735), (2638, 83980), (3230, 68588), (4199, 52760), (4420, 50122), (4940, 44846), (5276, 41990), (6460, 34294), (6595, 33592), (8398, 26380), (8840, 25061), (9880, 22423), (10552, 20995), (12920, 17147), (13190, 16796)]