20199451220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{199}}^1\times {\mathrm{509}}^1$

素因数の和:802

約数の個数: 144

約数和(自身を含む): 47038320000

約数和(自身を除く): 26838868780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 118, 130, 169, 199, 236, 260, 295, 338, 398, 509, 590, 676, 767, 796, 845, 995, 1018, 1180, 1534, 1690, 1990, 2036, 2545, 2587, 3068, 3380, 3835, 3980, 5090, 5174, 6617, 7670, 9971, 10180, 10348, 11741, 12935, 13234, 15340, 19942, 23482, 25870, 26468, 30031, 33085, 33631, 39884, 46964, 49855, 51740, 58705, 60062, 66170, 67262, 86021, 99710, 101291, 117410, 120124, 132340, 134524, 150155, 152633, 168155, 172042, 199420, 202582, 234820, 300310, 305266, 336310, 344084, 390403, 405164, 430105, 506455, 600620, 610532, 672620, 763165, 780806, 860210, 1012910, 1316783, 1526330, 1561612, 1720420, 1952015, 1984229, 2025820, 2633566, 3052660, 3904030, 3968458, 5075239, 5267132, 5976169, 6583915, 7808060, 7936916, 9921145, 10150478, 11952338, 13167830, 17118179, 19842290, 20300956, 23904676, 25376195, 26335660, 29880845, 34236358, 39684580, 50752390, 59761690, 68472716, 77690197, 85590895, 101504780, 119523380, 155380394, 171181790, 310760788, 342363580, 388450985, 776901970, 1009972561, 1553803940, 2019945122, 4039890244, 5049862805, 10099725610, 20199451220]

約数ペア:

[(1, 20199451220), (2, 10099725610), (4, 5049862805), (5, 4039890244), (10, 2019945122), (13, 1553803940), (20, 1009972561), (26, 776901970), (52, 388450985), (59, 342363580), (65, 310760788), (118, 171181790), (130, 155380394), (169, 119523380), (199, 101504780), (236, 85590895), (260, 77690197), (295, 68472716), (338, 59761690), (398, 50752390), (509, 39684580), (590, 34236358), (676, 29880845), (767, 26335660), (796, 25376195), (845, 23904676), (995, 20300956), (1018, 19842290), (1180, 17118179), (1534, 13167830), (1690, 11952338), (1990, 10150478), (2036, 9921145), (2545, 7936916), (2587, 7808060), (3068, 6583915), (3380, 5976169), (3835, 5267132), (3980, 5075239), (5090, 3968458), (5174, 3904030), (6617, 3052660), (7670, 2633566), (9971, 2025820), (10180, 1984229), (10348, 1952015), (11741, 1720420), (12935, 1561612), (13234, 1526330), (15340, 1316783), (19942, 1012910), (23482, 860210), (25870, 780806), (26468, 763165), (30031, 672620), (33085, 610532), (33631, 600620), (39884, 506455), (46964, 430105), (49855, 405164), (51740, 390403), (58705, 344084), (60062, 336310), (66170, 305266), (67262, 300310), (86021, 234820), (99710, 202582), (101291, 199420), (117410, 172042), (120124, 168155), (132340, 152633), (134524, 150155)]