280420560

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{55639}}^1$

素因数の和:55665

約数の個数: 120

約数和(自身を含む): 1076300160

約数和(自身を除く): 795879600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 55639, 111278, 166917, 222556, 278195, 333834, 389473, 445112, 500751, 556390, 667668, 778946, 834585, 890224, 1001502, 1112780, 1168419, 1335336, 1557892, 1669170, 1947365, 2003004, 2225560, 2336838, 2503755, 2670672, 3115784, 3338340, 3505257, 3894730, 4006008, 4451120, 4673676, 5007510, 5842095, 6231568, 6676680, 7010514, 7789460, 8012016, 9347352, 10015020, 11684190, 13353360, 14021028, 15578920, 17526285, 18694704, 20030040, 23368380, 28042056, 31157840, 35052570, 40060080, 46736760, 56084112, 70105140, 93473520, 140210280, 280420560]

約数ペア:

[(1, 280420560), (2, 140210280), (3, 93473520), (4, 70105140), (5, 56084112), (6, 46736760), (7, 40060080), (8, 35052570), (9, 31157840), (10, 28042056), (12, 23368380), (14, 20030040), (15, 18694704), (16, 17526285), (18, 15578920), (20, 14021028), (21, 13353360), (24, 11684190), (28, 10015020), (30, 9347352), (35, 8012016), (36, 7789460), (40, 7010514), (42, 6676680), (45, 6231568), (48, 5842095), (56, 5007510), (60, 4673676), (63, 4451120), (70, 4006008), (72, 3894730), (80, 3505257), (84, 3338340), (90, 3115784), (105, 2670672), (112, 2503755), (120, 2336838), (126, 2225560), (140, 2003004), (144, 1947365), (168, 1669170), (180, 1557892), (210, 1335336), (240, 1168419), (252, 1112780), (280, 1001502), (315, 890224), (336, 834585), (360, 778946), (420, 667668), (504, 556390), (560, 500751), (630, 445112), (720, 389473), (840, 333834), (1008, 278195), (1260, 222556), (1680, 166917), (2520, 111278), (5040, 55639)]