661377560

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{13009}}^1$

素因数の和:13092

約数の個数: 64

約数和(自身を含む): 1573689600

約数和(自身を除く): 912312040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 410, 620, 820, 1240, 1271, 1640, 2542, 5084, 6355, 10168, 12710, 13009, 25420, 26018, 50840, 52036, 65045, 104072, 130090, 260180, 403279, 520360, 533369, 806558, 1066738, 1613116, 2016395, 2133476, 2666845, 3226232, 4032790, 4266952, 5333690, 8065580, 10667380, 16131160, 16534439, 21334760, 33068878, 66137756, 82672195, 132275512, 165344390, 330688780, 661377560]

約数ペア:

[(1, 661377560), (2, 330688780), (4, 165344390), (5, 132275512), (8, 82672195), (10, 66137756), (20, 33068878), (31, 21334760), (40, 16534439), (41, 16131160), (62, 10667380), (82, 8065580), (124, 5333690), (155, 4266952), (164, 4032790), (205, 3226232), (248, 2666845), (310, 2133476), (328, 2016395), (410, 1613116), (620, 1066738), (820, 806558), (1240, 533369), (1271, 520360), (1640, 403279), (2542, 260180), (5084, 130090), (6355, 104072), (10168, 65045), (12710, 52036), (13009, 50840), (25420, 26018)]