21220437160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1\times {\mathrm{2339}}^1$

素因数の和:2675

約数の個数: 128

約数和(自身を含む): 52363584000

約数和(自身を除く): 31143146840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 239, 260, 292, 365, 478, 520, 584, 730, 949, 956, 1195, 1460, 1898, 1912, 2339, 2390, 2920, 3107, 3796, 4678, 4745, 4780, 6214, 7592, 9356, 9490, 9560, 11695, 12428, 15535, 17447, 18712, 18980, 23390, 24856, 30407, 31070, 34894, 37960, 46780, 60814, 62140, 69788, 87235, 93560, 121628, 124280, 139576, 152035, 170747, 174470, 226811, 243256, 304070, 341494, 348940, 453622, 559021, 608140, 682988, 697880, 853735, 907244, 1118042, 1134055, 1216280, 1365976, 1707470, 1814488, 2219711, 2236084, 2268110, 2795105, 3414940, 4439422, 4472168, 4536220, 5590210, 6829880, 7267273, 8878844, 9072440, 11098555, 11180420, 14534546, 17757688, 22197110, 22360840, 29069092, 36336365, 40808533, 44394220, 58138184, 72672730, 81617066, 88788440, 145345460, 163234132, 204042665, 290690920, 326468264, 408085330, 530510929, 816170660, 1061021858, 1632341320, 2122043716, 2652554645, 4244087432, 5305109290, 10610218580, 21220437160]

約数ペア:

[(1, 21220437160), (2, 10610218580), (4, 5305109290), (5, 4244087432), (8, 2652554645), (10, 2122043716), (13, 1632341320), (20, 1061021858), (26, 816170660), (40, 530510929), (52, 408085330), (65, 326468264), (73, 290690920), (104, 204042665), (130, 163234132), (146, 145345460), (239, 88788440), (260, 81617066), (292, 72672730), (365, 58138184), (478, 44394220), (520, 40808533), (584, 36336365), (730, 29069092), (949, 22360840), (956, 22197110), (1195, 17757688), (1460, 14534546), (1898, 11180420), (1912, 11098555), (2339, 9072440), (2390, 8878844), (2920, 7267273), (3107, 6829880), (3796, 5590210), (4678, 4536220), (4745, 4472168), (4780, 4439422), (6214, 3414940), (7592, 2795105), (9356, 2268110), (9490, 2236084), (9560, 2219711), (11695, 1814488), (12428, 1707470), (15535, 1365976), (17447, 1216280), (18712, 1134055), (18980, 1118042), (23390, 907244), (24856, 853735), (30407, 697880), (31070, 682988), (34894, 608140), (37960, 559021), (46780, 453622), (60814, 348940), (62140, 341494), (69788, 304070), (87235, 243256), (93560, 226811), (121628, 174470), (124280, 170747), (139576, 152035)]