646522360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 1664069400

約数和(自身を除く): 1017547040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 121, 124, 139, 155, 220, 242, 248, 278, 310, 341, 440, 484, 556, 605, 620, 682, 695, 961, 968, 1112, 1210, 1240, 1364, 1390, 1529, 1705, 1922, 2420, 2728, 2780, 3058, 3410, 3751, 3844, 4309, 4805, 4840, 5560, 6116, 6820, 7502, 7645, 7688, 8618, 9610, 10571, 12232, 13640, 15004, 15290, 16819, 17236, 18755, 19220, 21142, 21545, 30008, 30580, 33638, 34472, 37510, 38440, 42284, 43090, 47399, 52855, 61160, 67276, 75020, 84095, 84568, 86180, 94798, 105710, 116281, 133579, 134552, 150040, 168190, 172360, 189596, 211420, 232562, 236995, 267158, 336380, 379192, 422840, 465124, 473990, 521389, 534316, 581405, 667895, 672760, 930248, 947980, 1042778, 1068632, 1162810, 1335790, 1469369, 1895960, 2085556, 2325620, 2606945, 2671580, 2938738, 4171112, 4651240, 5213890, 5343160, 5877476, 7346845, 10427780, 11754952, 14693690, 16163059, 20855560, 29387380, 32326118, 58774760, 64652236, 80815295, 129304472, 161630590, 323261180, 646522360]

約数ペア:

[(1, 646522360), (2, 323261180), (4, 161630590), (5, 129304472), (8, 80815295), (10, 64652236), (11, 58774760), (20, 32326118), (22, 29387380), (31, 20855560), (40, 16163059), (44, 14693690), (55, 11754952), (62, 10427780), (88, 7346845), (110, 5877476), (121, 5343160), (124, 5213890), (139, 4651240), (155, 4171112), (220, 2938738), (242, 2671580), (248, 2606945), (278, 2325620), (310, 2085556), (341, 1895960), (440, 1469369), (484, 1335790), (556, 1162810), (605, 1068632), (620, 1042778), (682, 947980), (695, 930248), (961, 672760), (968, 667895), (1112, 581405), (1210, 534316), (1240, 521389), (1364, 473990), (1390, 465124), (1529, 422840), (1705, 379192), (1922, 336380), (2420, 267158), (2728, 236995), (2780, 232562), (3058, 211420), (3410, 189596), (3751, 172360), (3844, 168190), (4309, 150040), (4805, 134552), (4840, 133579), (5560, 116281), (6116, 105710), (6820, 94798), (7502, 86180), (7645, 84568), (7688, 84095), (8618, 75020), (9610, 67276), (10571, 61160), (12232, 52855), (13640, 47399), (15004, 43090), (15290, 42284), (16819, 38440), (17236, 37510), (18755, 34472), (19220, 33638), (21142, 30580), (21545, 30008)]