178801980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1084

約数の個数: 144

約数和(自身を含む): 592524576

約数和(自身を除く): 413722596

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 61, 70, 84, 98, 105, 122, 140, 147, 183, 196, 210, 244, 245, 294, 305, 366, 420, 427, 490, 588, 610, 732, 735, 854, 915, 980, 997, 1220, 1281, 1470, 1708, 1830, 1994, 2135, 2562, 2940, 2989, 2991, 3660, 3988, 4270, 4985, 5124, 5978, 5982, 6405, 6979, 8540, 8967, 9970, 11956, 11964, 12810, 13958, 14945, 14955, 17934, 19940, 20937, 25620, 27916, 29890, 29910, 34895, 35868, 41874, 44835, 48853, 59780, 59820, 60817, 69790, 83748, 89670, 97706, 104685, 121634, 139580, 146559, 179340, 182451, 195412, 209370, 243268, 244265, 293118, 304085, 364902, 418740, 425719, 488530, 586236, 608170, 729804, 732795, 851438, 912255, 977060, 1216340, 1277157, 1465590, 1702876, 1824510, 2128595, 2554314, 2931180, 2980033, 3649020, 4257190, 5108628, 5960066, 6385785, 8514380, 8940099, 11920132, 12771570, 14900165, 17880198, 25543140, 29800330, 35760396, 44700495, 59600660, 89400990, 178801980]

約数ペア:

[(1, 178801980), (2, 89400990), (3, 59600660), (4, 44700495), (5, 35760396), (6, 29800330), (7, 25543140), (10, 17880198), (12, 14900165), (14, 12771570), (15, 11920132), (20, 8940099), (21, 8514380), (28, 6385785), (30, 5960066), (35, 5108628), (42, 4257190), (49, 3649020), (60, 2980033), (61, 2931180), (70, 2554314), (84, 2128595), (98, 1824510), (105, 1702876), (122, 1465590), (140, 1277157), (147, 1216340), (183, 977060), (196, 912255), (210, 851438), (244, 732795), (245, 729804), (294, 608170), (305, 586236), (366, 488530), (420, 425719), (427, 418740), (490, 364902), (588, 304085), (610, 293118), (732, 244265), (735, 243268), (854, 209370), (915, 195412), (980, 182451), (997, 179340), (1220, 146559), (1281, 139580), (1470, 121634), (1708, 104685), (1830, 97706), (1994, 89670), (2135, 83748), (2562, 69790), (2940, 60817), (2989, 59820), (2991, 59780), (3660, 48853), (3988, 44835), (4270, 41874), (4985, 35868), (5124, 34895), (5978, 29910), (5982, 29890), (6405, 27916), (6979, 25620), (8540, 20937), (8967, 19940), (9970, 17934), (11956, 14955), (11964, 14945), (12810, 13958)]