208780660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:107

約数の個数: 120

約数和(自身を含む): 519482880

約数和(自身を除く): 310702220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 31, 44, 46, 55, 62, 92, 110, 115, 121, 124, 155, 220, 230, 242, 253, 310, 341, 460, 484, 506, 605, 620, 682, 713, 1012, 1210, 1265, 1331, 1364, 1426, 1705, 2420, 2530, 2662, 2783, 2852, 3410, 3565, 3751, 5060, 5324, 5566, 6655, 6820, 7130, 7502, 7843, 11132, 13310, 13915, 14260, 14641, 15004, 15686, 18755, 26620, 27830, 29282, 30613, 31372, 37510, 39215, 41261, 55660, 58564, 61226, 73205, 75020, 78430, 82522, 86273, 122452, 146410, 153065, 156860, 165044, 172546, 206305, 292820, 306130, 336743, 345092, 412610, 431365, 453871, 612260, 673486, 825220, 862730, 907742, 949003, 1346972, 1683715, 1725460, 1815484, 1898006, 2269355, 3367430, 3796012, 4538710, 4745015, 6734860, 9077420, 9490030, 10439033, 18980060, 20878066, 41756132, 52195165, 104390330, 208780660]

約数ペア:

[(1, 208780660), (2, 104390330), (4, 52195165), (5, 41756132), (10, 20878066), (11, 18980060), (20, 10439033), (22, 9490030), (23, 9077420), (31, 6734860), (44, 4745015), (46, 4538710), (55, 3796012), (62, 3367430), (92, 2269355), (110, 1898006), (115, 1815484), (121, 1725460), (124, 1683715), (155, 1346972), (220, 949003), (230, 907742), (242, 862730), (253, 825220), (310, 673486), (341, 612260), (460, 453871), (484, 431365), (506, 412610), (605, 345092), (620, 336743), (682, 306130), (713, 292820), (1012, 206305), (1210, 172546), (1265, 165044), (1331, 156860), (1364, 153065), (1426, 146410), (1705, 122452), (2420, 86273), (2530, 82522), (2662, 78430), (2783, 75020), (2852, 73205), (3410, 61226), (3565, 58564), (3751, 55660), (5060, 41261), (5324, 39215), (5566, 37510), (6655, 31372), (6820, 30613), (7130, 29282), (7502, 27830), (7843, 26620), (11132, 18755), (13310, 15686), (13915, 15004), (14260, 14641)]