20100990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:266

約数の個数: 128

約数和(自身を含む): 61286400

約数和(自身を除く): 41185410

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 37, 39, 42, 65, 70, 74, 78, 91, 105, 111, 130, 182, 185, 195, 199, 210, 222, 259, 273, 370, 390, 398, 455, 481, 518, 546, 555, 597, 777, 910, 962, 995, 1110, 1194, 1295, 1365, 1393, 1443, 1554, 1990, 2405, 2587, 2590, 2730, 2786, 2886, 2985, 3367, 3885, 4179, 4810, 5174, 5970, 6734, 6965, 7215, 7363, 7761, 7770, 8358, 10101, 12935, 13930, 14430, 14726, 15522, 16835, 18109, 20202, 20895, 22089, 25870, 33670, 36218, 36815, 38805, 41790, 44178, 50505, 51541, 54327, 73630, 77610, 90545, 95719, 101010, 103082, 108654, 110445, 154623, 181090, 191438, 220890, 257705, 271635, 287157, 309246, 478595, 515410, 543270, 574314, 670033, 773115, 957190, 1340066, 1435785, 1546230, 2010099, 2871570, 3350165, 4020198, 6700330, 10050495, 20100990]

約数ペア:

[(1, 20100990), (2, 10050495), (3, 6700330), (5, 4020198), (6, 3350165), (7, 2871570), (10, 2010099), (13, 1546230), (14, 1435785), (15, 1340066), (21, 957190), (26, 773115), (30, 670033), (35, 574314), (37, 543270), (39, 515410), (42, 478595), (65, 309246), (70, 287157), (74, 271635), (78, 257705), (91, 220890), (105, 191438), (111, 181090), (130, 154623), (182, 110445), (185, 108654), (195, 103082), (199, 101010), (210, 95719), (222, 90545), (259, 77610), (273, 73630), (370, 54327), (390, 51541), (398, 50505), (455, 44178), (481, 41790), (518, 38805), (546, 36815), (555, 36218), (597, 33670), (777, 25870), (910, 22089), (962, 20895), (995, 20202), (1110, 18109), (1194, 16835), (1295, 15522), (1365, 14726), (1393, 14430), (1443, 13930), (1554, 12935), (1990, 10101), (2405, 8358), (2587, 7770), (2590, 7761), (2730, 7363), (2786, 7215), (2886, 6965), (2985, 6734), (3367, 5970), (3885, 5174), (4179, 4810)]