20121710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:525

約数の個数: 64

約数和(自身を含む): 45111168

約数和(自身を除く): 24989458

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 37, 70, 74, 85, 119, 170, 185, 238, 259, 370, 457, 518, 595, 629, 914, 1190, 1258, 1295, 2285, 2590, 3145, 3199, 4403, 4570, 6290, 6398, 7769, 8806, 15538, 15995, 16909, 22015, 31990, 33818, 38845, 44030, 54383, 77690, 84545, 108766, 118363, 169090, 236726, 271915, 287453, 543830, 574906, 591815, 1183630, 1437265, 2012171, 2874530, 4024342, 10060855, 20121710]

約数ペア:

[(1, 20121710), (2, 10060855), (5, 4024342), (7, 2874530), (10, 2012171), (14, 1437265), (17, 1183630), (34, 591815), (35, 574906), (37, 543830), (70, 287453), (74, 271915), (85, 236726), (119, 169090), (170, 118363), (185, 108766), (238, 84545), (259, 77690), (370, 54383), (457, 44030), (518, 38845), (595, 33818), (629, 31990), (914, 22015), (1190, 16909), (1258, 15995), (1295, 15538), (2285, 8806), (2590, 7769), (3145, 6398), (3199, 6290), (4403, 4570)]