18948440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:145

約数の個数: 128

約数和(自身を含む): 52531200

約数和(自身を除く): 33582760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 37, 40, 56, 59, 62, 70, 74, 118, 124, 140, 148, 155, 185, 217, 236, 248, 259, 280, 295, 296, 310, 370, 413, 434, 472, 518, 590, 620, 740, 826, 868, 1036, 1085, 1147, 1180, 1240, 1295, 1480, 1652, 1736, 1829, 2065, 2072, 2170, 2183, 2294, 2360, 2590, 3304, 3658, 4130, 4340, 4366, 4588, 5180, 5735, 7316, 8029, 8260, 8680, 8732, 9145, 9176, 10360, 10915, 11470, 12803, 14632, 15281, 16058, 16520, 17464, 18290, 21830, 22940, 25606, 30562, 32116, 36580, 40145, 43660, 45880, 51212, 61124, 64015, 64232, 67673, 73160, 76405, 80290, 87320, 102424, 122248, 128030, 135346, 152810, 160580, 256060, 270692, 305620, 321160, 338365, 473711, 512120, 541384, 611240, 676730, 947422, 1353460, 1894844, 2368555, 2706920, 3789688, 4737110, 9474220, 18948440]

約数ペア:

[(1, 18948440), (2, 9474220), (4, 4737110), (5, 3789688), (7, 2706920), (8, 2368555), (10, 1894844), (14, 1353460), (20, 947422), (28, 676730), (31, 611240), (35, 541384), (37, 512120), (40, 473711), (56, 338365), (59, 321160), (62, 305620), (70, 270692), (74, 256060), (118, 160580), (124, 152810), (140, 135346), (148, 128030), (155, 122248), (185, 102424), (217, 87320), (236, 80290), (248, 76405), (259, 73160), (280, 67673), (295, 64232), (296, 64015), (310, 61124), (370, 51212), (413, 45880), (434, 43660), (472, 40145), (518, 36580), (590, 32116), (620, 30562), (740, 25606), (826, 22940), (868, 21830), (1036, 18290), (1085, 17464), (1147, 16520), (1180, 16058), (1240, 15281), (1295, 14632), (1480, 12803), (1652, 11470), (1736, 10915), (1829, 10360), (2065, 9176), (2072, 9145), (2170, 8732), (2183, 8680), (2294, 8260), (2360, 8029), (2590, 7316), (3304, 5735), (3658, 5180), (4130, 4588), (4340, 4366)]