646068780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{26987}}^1$

素因数の和:27028

約数の個数: 144

約数和(自身を含む): 2357671680

約数和(自身を除く): 1711602900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 855, 1140, 1197, 1260, 1330, 1596, 1710, 1995, 2394, 2660, 3420, 3990, 4788, 5985, 7980, 11970, 23940, 26987, 53974, 80961, 107948, 134935, 161922, 188909, 242883, 269870, 323844, 377818, 404805, 485766, 512753, 539740, 566727, 755636, 809610, 944545, 971532, 1025506, 1133454, 1214415, 1538259, 1619220, 1700181, 1889090, 2051012, 2266908, 2428830, 2563765, 2833635, 3076518, 3400362, 3589271, 3778180, 4614777, 4857660, 5127530, 5667270, 6153036, 6800724, 7178542, 7691295, 8500905, 9229554, 10255060, 10767813, 11334540, 14357084, 15382590, 17001810, 17946355, 18459108, 21535626, 23073885, 30765180, 32303439, 34003620, 35892710, 43071252, 46147770, 53839065, 64606878, 71785420, 92295540, 107678130, 129213756, 161517195, 215356260, 323034390, 646068780]

約数ペア:

[(1, 646068780), (2, 323034390), (3, 215356260), (4, 161517195), (5, 129213756), (6, 107678130), (7, 92295540), (9, 71785420), (10, 64606878), (12, 53839065), (14, 46147770), (15, 43071252), (18, 35892710), (19, 34003620), (20, 32303439), (21, 30765180), (28, 23073885), (30, 21535626), (35, 18459108), (36, 17946355), (38, 17001810), (42, 15382590), (45, 14357084), (57, 11334540), (60, 10767813), (63, 10255060), (70, 9229554), (76, 8500905), (84, 7691295), (90, 7178542), (95, 6800724), (105, 6153036), (114, 5667270), (126, 5127530), (133, 4857660), (140, 4614777), (171, 3778180), (180, 3589271), (190, 3400362), (210, 3076518), (228, 2833635), (252, 2563765), (266, 2428830), (285, 2266908), (315, 2051012), (342, 1889090), (380, 1700181), (399, 1619220), (420, 1538259), (532, 1214415), (570, 1133454), (630, 1025506), (665, 971532), (684, 944545), (798, 809610), (855, 755636), (1140, 566727), (1197, 539740), (1260, 512753), (1330, 485766), (1596, 404805), (1710, 377818), (1995, 323844), (2394, 269870), (2660, 242883), (3420, 188909), (3990, 161922), (4788, 134935), (5985, 107948), (7980, 80961), (11970, 53974), (23940, 26987)]