217556920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{3251}}^1$

素因数の和:3508

約数の個数: 64

約数和(自身を含む): 561945600

約数和(自身を除く): 344388680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 478, 956, 1195, 1673, 1912, 2390, 3251, 3346, 4780, 6502, 6692, 8365, 9560, 13004, 13384, 16255, 16730, 22757, 26008, 32510, 33460, 45514, 65020, 66920, 91028, 113785, 130040, 182056, 227570, 455140, 776989, 910280, 1553978, 3107956, 3884945, 5438923, 6215912, 7769890, 10877846, 15539780, 21755692, 27194615, 31079560, 43511384, 54389230, 108778460, 217556920]

約数ペア:

[(1, 217556920), (2, 108778460), (4, 54389230), (5, 43511384), (7, 31079560), (8, 27194615), (10, 21755692), (14, 15539780), (20, 10877846), (28, 7769890), (35, 6215912), (40, 5438923), (56, 3884945), (70, 3107956), (140, 1553978), (239, 910280), (280, 776989), (478, 455140), (956, 227570), (1195, 182056), (1673, 130040), (1912, 113785), (2390, 91028), (3251, 66920), (3346, 65020), (4780, 45514), (6502, 33460), (6692, 32510), (8365, 26008), (9560, 22757), (13004, 16730), (13384, 16255)]