79981980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{61}}^1$

素因数の和:168

約数の個数: 144

約数和(自身を含む): 251254752

約数和(自身を除く): 171272772

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 41, 52, 60, 61, 65, 78, 82, 122, 123, 130, 156, 164, 183, 195, 205, 244, 246, 260, 305, 366, 390, 410, 492, 533, 610, 615, 732, 780, 793, 820, 915, 1066, 1220, 1230, 1586, 1599, 1681, 1830, 2132, 2379, 2460, 2501, 2665, 3172, 3198, 3362, 3660, 3965, 4758, 5002, 5043, 5330, 6396, 6724, 7503, 7930, 7995, 8405, 9516, 10004, 10086, 10660, 11895, 12505, 15006, 15860, 15990, 16810, 20172, 21853, 23790, 25010, 25215, 30012, 31980, 32513, 33620, 37515, 43706, 47580, 50020, 50430, 65026, 65559, 75030, 87412, 97539, 100860, 102541, 109265, 130052, 131118, 150060, 162565, 195078, 205082, 218530, 262236, 307623, 325130, 327795, 390156, 410164, 437060, 487695, 512705, 615246, 650260, 655590, 975390, 1025410, 1230492, 1311180, 1333033, 1538115, 1950780, 2050820, 2666066, 3076230, 3999099, 5332132, 6152460, 6665165, 7998198, 13330330, 15996396, 19995495, 26660660, 39990990, 79981980]

約数ペア:

[(1, 79981980), (2, 39990990), (3, 26660660), (4, 19995495), (5, 15996396), (6, 13330330), (10, 7998198), (12, 6665165), (13, 6152460), (15, 5332132), (20, 3999099), (26, 3076230), (30, 2666066), (39, 2050820), (41, 1950780), (52, 1538115), (60, 1333033), (61, 1311180), (65, 1230492), (78, 1025410), (82, 975390), (122, 655590), (123, 650260), (130, 615246), (156, 512705), (164, 487695), (183, 437060), (195, 410164), (205, 390156), (244, 327795), (246, 325130), (260, 307623), (305, 262236), (366, 218530), (390, 205082), (410, 195078), (492, 162565), (533, 150060), (610, 131118), (615, 130052), (732, 109265), (780, 102541), (793, 100860), (820, 97539), (915, 87412), (1066, 75030), (1220, 65559), (1230, 65026), (1586, 50430), (1599, 50020), (1681, 47580), (1830, 43706), (2132, 37515), (2379, 33620), (2460, 32513), (2501, 31980), (2665, 30012), (3172, 25215), (3198, 25010), (3362, 23790), (3660, 21853), (3965, 20172), (4758, 16810), (5002, 15990), (5043, 15860), (5330, 15006), (6396, 12505), (6724, 11895), (7503, 10660), (7930, 10086), (7995, 10004), (8405, 9516)]