81355546880

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1\times {\mathrm{3323}}^1$

素因数の和:3992

約数の個数: 144

約数和(自身を含む): 201544809984

約数和(自身を除く): 120189263104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 617, 620, 640, 992, 1234, 1240, 1280, 1984, 2468, 2480, 3085, 3323, 3968, 4936, 4960, 6170, 6646, 7936, 9872, 9920, 12340, 13292, 16615, 19127, 19744, 19840, 24680, 26584, 33230, 38254, 39488, 39680, 49360, 53168, 66460, 76508, 78976, 95635, 98720, 103013, 106336, 132920, 153016, 157952, 191270, 197440, 206026, 212672, 265840, 306032, 382540, 394880, 412052, 425344, 515065, 531680, 612064, 765080, 789760, 824104, 850688, 1030130, 1063360, 1224128, 1530160, 1648208, 2050291, 2060260, 2126720, 2448256, 3060320, 3296416, 4100582, 4120520, 4253440, 4896512, 6120640, 6592832, 8201164, 8241040, 10251455, 12241280, 13185664, 16402328, 16482080, 20502910, 24482560, 26371328, 32804656, 32964160, 41005820, 63559021, 65609312, 65928320, 82011640, 127118042, 131218624, 131856640, 164023280, 254236084, 262437248, 317795105, 328046560, 508472168, 524874496, 635590210, 656093120, 1016944336, 1271180420, 1312186240, 2033888672, 2542360840, 2624372480, 4067777344, 5084721680, 8135554688, 10169443360, 16271109376, 20338886720, 40677773440, 81355546880]

約数ペア:

[(1, 81355546880), (2, 40677773440), (4, 20338886720), (5, 16271109376), (8, 10169443360), (10, 8135554688), (16, 5084721680), (20, 4067777344), (31, 2624372480), (32, 2542360840), (40, 2033888672), (62, 1312186240), (64, 1271180420), (80, 1016944336), (124, 656093120), (128, 635590210), (155, 524874496), (160, 508472168), (248, 328046560), (256, 317795105), (310, 262437248), (320, 254236084), (496, 164023280), (617, 131856640), (620, 131218624), (640, 127118042), (992, 82011640), (1234, 65928320), (1240, 65609312), (1280, 63559021), (1984, 41005820), (2468, 32964160), (2480, 32804656), (3085, 26371328), (3323, 24482560), (3968, 20502910), (4936, 16482080), (4960, 16402328), (6170, 13185664), (6646, 12241280), (7936, 10251455), (9872, 8241040), (9920, 8201164), (12340, 6592832), (13292, 6120640), (16615, 4896512), (19127, 4253440), (19744, 4120520), (19840, 4100582), (24680, 3296416), (26584, 3060320), (33230, 2448256), (38254, 2126720), (39488, 2060260), (39680, 2050291), (49360, 1648208), (53168, 1530160), (66460, 1224128), (76508, 1063360), (78976, 1030130), (95635, 850688), (98720, 824104), (103013, 789760), (106336, 765080), (132920, 612064), (153016, 531680), (157952, 515065), (191270, 425344), (197440, 412052), (206026, 394880), (212672, 382540), (265840, 306032)]