1321978880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8329}}^1$

素因数の和:8385

約数の個数: 88

約数和(自身を含む): 3273889920

約数和(自身を除く): 1951911040

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, 512, 620, 640, 992, 1024, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 5120, 7936, 8329, 9920, 15872, 16658, 19840, 31744, 33316, 39680, 41645, 66632, 79360, 83290, 133264, 158720, 166580, 258199, 266528, 333160, 516398, 533056, 666320, 1032796, 1066112, 1290995, 1332640, 2065592, 2132224, 2581990, 2665280, 4131184, 4264448, 5163980, 5330560, 8262368, 8528896, 10327960, 10661120, 16524736, 20655920, 21322240, 33049472, 41311840, 42644480, 66098944, 82623680, 132197888, 165247360, 264395776, 330494720, 660989440, 1321978880]

約数ペア:

[(1, 1321978880), (2, 660989440), (4, 330494720), (5, 264395776), (8, 165247360), (10, 132197888), (16, 82623680), (20, 66098944), (31, 42644480), (32, 41311840), (40, 33049472), (62, 21322240), (64, 20655920), (80, 16524736), (124, 10661120), (128, 10327960), (155, 8528896), (160, 8262368), (248, 5330560), (256, 5163980), (310, 4264448), (320, 4131184), (496, 2665280), (512, 2581990), (620, 2132224), (640, 2065592), (992, 1332640), (1024, 1290995), (1240, 1066112), (1280, 1032796), (1984, 666320), (2480, 533056), (2560, 516398), (3968, 333160), (4960, 266528), (5120, 258199), (7936, 166580), (8329, 158720), (9920, 133264), (15872, 83290), (16658, 79360), (19840, 66632), (31744, 41645), (33316, 39680)]