661569400

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:545

約数の個数: 96

約数和(自身を含む): 1576885680

約数和(自身を除く): 915316280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 211, 244, 257, 305, 422, 488, 514, 610, 844, 1028, 1055, 1220, 1285, 1525, 1688, 2056, 2110, 2440, 2570, 3050, 4220, 5140, 5275, 6100, 6425, 8440, 10280, 10550, 12200, 12850, 12871, 15677, 21100, 25700, 25742, 31354, 42200, 51400, 51484, 54227, 62708, 64355, 78385, 102968, 108454, 125416, 128710, 156770, 216908, 257420, 271135, 313540, 321775, 391925, 433816, 514840, 542270, 627080, 643550, 783850, 1084540, 1287100, 1355675, 1567700, 2169080, 2574200, 2711350, 3135400, 3307847, 5422700, 6615694, 10845400, 13231388, 16539235, 26462776, 33078470, 66156940, 82696175, 132313880, 165392350, 330784700, 661569400]

約数ペア:

[(1, 661569400), (2, 330784700), (4, 165392350), (5, 132313880), (8, 82696175), (10, 66156940), (20, 33078470), (25, 26462776), (40, 16539235), (50, 13231388), (61, 10845400), (100, 6615694), (122, 5422700), (200, 3307847), (211, 3135400), (244, 2711350), (257, 2574200), (305, 2169080), (422, 1567700), (488, 1355675), (514, 1287100), (610, 1084540), (844, 783850), (1028, 643550), (1055, 627080), (1220, 542270), (1285, 514840), (1525, 433816), (1688, 391925), (2056, 321775), (2110, 313540), (2440, 271135), (2570, 257420), (3050, 216908), (4220, 156770), (5140, 128710), (5275, 125416), (6100, 108454), (6425, 102968), (8440, 78385), (10280, 64355), (10550, 62708), (12200, 54227), (12850, 51484), (12871, 51400), (15677, 42200), (21100, 31354), (25700, 25742)]