18928910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:130

約数の個数: 128

約数和(自身を含む): 47996928

約数和(自身を除く): 29068018

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 31, 35, 55, 61, 62, 65, 70, 77, 91, 110, 122, 130, 143, 154, 155, 182, 217, 286, 305, 310, 341, 385, 403, 427, 434, 455, 610, 671, 682, 715, 770, 793, 806, 854, 910, 1001, 1085, 1342, 1430, 1586, 1705, 1891, 2002, 2015, 2135, 2170, 2387, 2821, 3355, 3410, 3782, 3965, 4030, 4270, 4433, 4697, 4774, 5005, 5551, 5642, 6710, 7930, 8723, 8866, 9394, 9455, 10010, 11102, 11935, 13237, 14105, 17446, 18910, 20801, 22165, 23485, 23870, 24583, 26474, 27755, 28210, 31031, 41602, 43615, 44330, 46970, 49166, 55510, 61061, 62062, 66185, 87230, 104005, 122122, 122915, 132370, 145607, 155155, 172081, 208010, 245830, 270413, 291214, 305305, 310310, 344162, 540826, 610610, 728035, 860405, 1352065, 1456070, 1720810, 1892891, 2704130, 3785782, 9464455, 18928910]

約数ペア:

[(1, 18928910), (2, 9464455), (5, 3785782), (7, 2704130), (10, 1892891), (11, 1720810), (13, 1456070), (14, 1352065), (22, 860405), (26, 728035), (31, 610610), (35, 540826), (55, 344162), (61, 310310), (62, 305305), (65, 291214), (70, 270413), (77, 245830), (91, 208010), (110, 172081), (122, 155155), (130, 145607), (143, 132370), (154, 122915), (155, 122122), (182, 104005), (217, 87230), (286, 66185), (305, 62062), (310, 61061), (341, 55510), (385, 49166), (403, 46970), (427, 44330), (434, 43615), (455, 41602), (610, 31031), (671, 28210), (682, 27755), (715, 26474), (770, 24583), (793, 23870), (806, 23485), (854, 22165), (910, 20801), (1001, 18910), (1085, 17446), (1342, 14105), (1430, 13237), (1586, 11935), (1705, 11102), (1891, 10010), (2002, 9455), (2015, 9394), (2135, 8866), (2170, 8723), (2387, 7930), (2821, 6710), (3355, 5642), (3410, 5551), (3782, 5005), (3965, 4774), (4030, 4697), (4270, 4433)]