20456149280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{91781}}^1$

素因数の和:92002

約数の個数: 96

約数和(自身を含む): 55509753600

約数和(自身を除く): 35053604320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 199, 224, 280, 398, 560, 796, 995, 1120, 1393, 1592, 1990, 2786, 3184, 3980, 5572, 6368, 6965, 7960, 11144, 13930, 15920, 22288, 27860, 31840, 44576, 55720, 91781, 111440, 183562, 222880, 367124, 458905, 642467, 734248, 917810, 1284934, 1468496, 1835620, 2569868, 2936992, 3212335, 3671240, 5139736, 6424670, 7342480, 10279472, 12849340, 14684960, 18264419, 20558944, 25698680, 36528838, 51397360, 73057676, 91322095, 102794720, 127850933, 146115352, 182644190, 255701866, 292230704, 365288380, 511403732, 584461408, 639254665, 730576760, 1022807464, 1278509330, 1461153520, 2045614928, 2557018660, 2922307040, 4091229856, 5114037320, 10228074640, 20456149280]

約数ペア:

[(1, 20456149280), (2, 10228074640), (4, 5114037320), (5, 4091229856), (7, 2922307040), (8, 2557018660), (10, 2045614928), (14, 1461153520), (16, 1278509330), (20, 1022807464), (28, 730576760), (32, 639254665), (35, 584461408), (40, 511403732), (56, 365288380), (70, 292230704), (80, 255701866), (112, 182644190), (140, 146115352), (160, 127850933), (199, 102794720), (224, 91322095), (280, 73057676), (398, 51397360), (560, 36528838), (796, 25698680), (995, 20558944), (1120, 18264419), (1393, 14684960), (1592, 12849340), (1990, 10279472), (2786, 7342480), (3184, 6424670), (3980, 5139736), (5572, 3671240), (6368, 3212335), (6965, 2936992), (7960, 2569868), (11144, 1835620), (13930, 1468496), (15920, 1284934), (22288, 917810), (27860, 734248), (31840, 642467), (44576, 458905), (55720, 367124), (91781, 222880), (111440, 183562)]