20280120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{3449}}^1$

素因数の和:3477

約数の個数: 96

約数和(自身を含む): 70794000

約数和(自身を除く): 50513880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 3449, 5880, 6898, 10347, 13796, 17245, 20694, 24143, 27592, 34490, 41388, 48286, 51735, 68980, 72429, 82776, 96572, 103470, 120715, 137960, 144858, 169001, 193144, 206940, 241430, 289716, 338002, 362145, 413880, 482860, 507003, 579432, 676004, 724290, 845005, 965720, 1014006, 1352008, 1448580, 1690010, 2028012, 2535015, 2897160, 3380020, 4056024, 5070030, 6760040, 10140060, 20280120]

約数ペア:

[(1, 20280120), (2, 10140060), (3, 6760040), (4, 5070030), (5, 4056024), (6, 3380020), (7, 2897160), (8, 2535015), (10, 2028012), (12, 1690010), (14, 1448580), (15, 1352008), (20, 1014006), (21, 965720), (24, 845005), (28, 724290), (30, 676004), (35, 579432), (40, 507003), (42, 482860), (49, 413880), (56, 362145), (60, 338002), (70, 289716), (84, 241430), (98, 206940), (105, 193144), (120, 169001), (140, 144858), (147, 137960), (168, 120715), (196, 103470), (210, 96572), (245, 82776), (280, 72429), (294, 68980), (392, 51735), (420, 48286), (490, 41388), (588, 34490), (735, 27592), (840, 24143), (980, 20694), (1176, 17245), (1470, 13796), (1960, 10347), (2940, 6898), (3449, 5880)]