19860080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{859}}^1$

素因数の和:906

約数の個数: 60

約数和(自身を含む): 49107720

約数和(自身を除く): 29247640

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 289, 340, 578, 680, 859, 1156, 1360, 1445, 1718, 2312, 2890, 3436, 4295, 4624, 5780, 6872, 8590, 11560, 13744, 14603, 17180, 23120, 29206, 34360, 58412, 68720, 73015, 116824, 146030, 233648, 248251, 292060, 496502, 584120, 993004, 1168240, 1241255, 1986008, 2482510, 3972016, 4965020, 9930040, 19860080]

約数ペア:

[(1, 19860080), (2, 9930040), (4, 4965020), (5, 3972016), (8, 2482510), (10, 1986008), (16, 1241255), (17, 1168240), (20, 993004), (34, 584120), (40, 496502), (68, 292060), (80, 248251), (85, 233648), (136, 146030), (170, 116824), (272, 73015), (289, 68720), (340, 58412), (578, 34360), (680, 29206), (859, 23120), (1156, 17180), (1360, 14603), (1445, 13744), (1718, 11560), (2312, 8590), (2890, 6872), (3436, 5780), (4295, 4624)]