28703220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{751}}^1$

素因数の和:790

約数の個数: 144

約数和(自身を含む): 100816128

約数和(自身を除く): 72112908

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 588, 637, 735, 751, 780, 910, 980, 1092, 1274, 1365, 1470, 1502, 1820, 1911, 2253, 2548, 2730, 2940, 3004, 3185, 3755, 3822, 4506, 5257, 5460, 6370, 7510, 7644, 9012, 9555, 9763, 10514, 11265, 12740, 15020, 15771, 19110, 19526, 21028, 22530, 26285, 29289, 31542, 36799, 38220, 39052, 45060, 48815, 52570, 58578, 63084, 68341, 73598, 78855, 97630, 105140, 110397, 117156, 136682, 146445, 147196, 157710, 183995, 195260, 205023, 220794, 273364, 292890, 315420, 341705, 367990, 410046, 441588, 478387, 551985, 585780, 683410, 735980, 820092, 956774, 1025115, 1103970, 1366820, 1435161, 1913548, 2050230, 2207940, 2391935, 2870322, 4100460, 4783870, 5740644, 7175805, 9567740, 14351610, 28703220]

約数ペア:

[(1, 28703220), (2, 14351610), (3, 9567740), (4, 7175805), (5, 5740644), (6, 4783870), (7, 4100460), (10, 2870322), (12, 2391935), (13, 2207940), (14, 2050230), (15, 1913548), (20, 1435161), (21, 1366820), (26, 1103970), (28, 1025115), (30, 956774), (35, 820092), (39, 735980), (42, 683410), (49, 585780), (52, 551985), (60, 478387), (65, 441588), (70, 410046), (78, 367990), (84, 341705), (91, 315420), (98, 292890), (105, 273364), (130, 220794), (140, 205023), (147, 195260), (156, 183995), (182, 157710), (195, 147196), (196, 146445), (210, 136682), (245, 117156), (260, 110397), (273, 105140), (294, 97630), (364, 78855), (390, 73598), (420, 68341), (455, 63084), (490, 58578), (546, 52570), (588, 48815), (637, 45060), (735, 39052), (751, 38220), (780, 36799), (910, 31542), (980, 29289), (1092, 26285), (1274, 22530), (1365, 21028), (1470, 19526), (1502, 19110), (1820, 15771), (1911, 15020), (2253, 12740), (2548, 11265), (2730, 10514), (2940, 9763), (3004, 9555), (3185, 9012), (3755, 7644), (3822, 7510), (4506, 6370), (5257, 5460)]