321775000

素因数分解:

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

素因数の和:303

約数の個数: 96

約数和(自身を含む): 770106960

約数和(自身を除く): 448331960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 125, 200, 211, 244, 250, 305, 422, 488, 500, 610, 625, 844, 1000, 1055, 1220, 1250, 1525, 1688, 2110, 2440, 2500, 3050, 3125, 4220, 5000, 5275, 6100, 6250, 7625, 8440, 10550, 12200, 12500, 12871, 15250, 21100, 25000, 25742, 26375, 30500, 38125, 42200, 51484, 52750, 61000, 64355, 76250, 102968, 105500, 128710, 131875, 152500, 190625, 211000, 257420, 263750, 305000, 321775, 381250, 514840, 527500, 643550, 659375, 762500, 1055000, 1287100, 1318750, 1525000, 1608875, 2574200, 2637500, 3217750, 5275000, 6435500, 8044375, 12871000, 16088750, 32177500, 40221875, 64355000, 80443750, 160887500, 321775000]

約数ペア:

[(1, 321775000), (2, 160887500), (4, 80443750), (5, 64355000), (8, 40221875), (10, 32177500), (20, 16088750), (25, 12871000), (40, 8044375), (50, 6435500), (61, 5275000), (100, 3217750), (122, 2637500), (125, 2574200), (200, 1608875), (211, 1525000), (244, 1318750), (250, 1287100), (305, 1055000), (422, 762500), (488, 659375), (500, 643550), (610, 527500), (625, 514840), (844, 381250), (1000, 321775), (1055, 305000), (1220, 263750), (1250, 257420), (1525, 211000), (1688, 190625), (2110, 152500), (2440, 131875), (2500, 128710), (3050, 105500), (3125, 102968), (4220, 76250), (5000, 64355), (5275, 61000), (6100, 52750), (6250, 51484), (7625, 42200), (8440, 38125), (10550, 30500), (12200, 26375), (12500, 25742), (12871, 25000), (15250, 21100)]