656943980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{409}}^1$

素因数の和:592

約数の個数: 144

約数和(自身を含む): 1766772000

約数和(自身を除く): 1109828020

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 149, 154, 196, 220, 245, 298, 308, 385, 409, 490, 539, 596, 745, 770, 818, 980, 1043, 1078, 1490, 1540, 1636, 1639, 2045, 2086, 2156, 2695, 2863, 2980, 3278, 4090, 4172, 4499, 5215, 5390, 5726, 6556, 7301, 8180, 8195, 8998, 10430, 10780, 11452, 11473, 14315, 14602, 16390, 17996, 20041, 20860, 22495, 22946, 28630, 29204, 31493, 32780, 36505, 40082, 44990, 45892, 57260, 57365, 60941, 62986, 73010, 80164, 80311, 89980, 100205, 114730, 121882, 125972, 146020, 157465, 160622, 200410, 220451, 229460, 243764, 304705, 314930, 321244, 400820, 401555, 426587, 440902, 609410, 629860, 670351, 803110, 853174, 881804, 1102255, 1218820, 1340702, 1606220, 1706348, 2132935, 2204510, 2681404, 2986109, 3351755, 4265870, 4409020, 4692457, 5972218, 6703510, 8531740, 9384914, 11944436, 13407020, 14930545, 18769828, 23462285, 29861090, 32847199, 46924570, 59722180, 65694398, 93849140, 131388796, 164235995, 328471990, 656943980]

約数ペア:

[(1, 656943980), (2, 328471990), (4, 164235995), (5, 131388796), (7, 93849140), (10, 65694398), (11, 59722180), (14, 46924570), (20, 32847199), (22, 29861090), (28, 23462285), (35, 18769828), (44, 14930545), (49, 13407020), (55, 11944436), (70, 9384914), (77, 8531740), (98, 6703510), (110, 5972218), (140, 4692457), (149, 4409020), (154, 4265870), (196, 3351755), (220, 2986109), (245, 2681404), (298, 2204510), (308, 2132935), (385, 1706348), (409, 1606220), (490, 1340702), (539, 1218820), (596, 1102255), (745, 881804), (770, 853174), (818, 803110), (980, 670351), (1043, 629860), (1078, 609410), (1490, 440902), (1540, 426587), (1636, 401555), (1639, 400820), (2045, 321244), (2086, 314930), (2156, 304705), (2695, 243764), (2863, 229460), (2980, 220451), (3278, 200410), (4090, 160622), (4172, 157465), (4499, 146020), (5215, 125972), (5390, 121882), (5726, 114730), (6556, 100205), (7301, 89980), (8180, 80311), (8195, 80164), (8998, 73010), (10430, 62986), (10780, 60941), (11452, 57365), (11473, 57260), (14315, 45892), (14602, 44990), (16390, 40082), (17996, 36505), (20041, 32780), (20860, 31493), (22495, 29204), (22946, 28630)]