128710000

素因数分解:

$2^4\times 5^4\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:300

約数の個数: 100

約数和(自身を含む): 318229384

約数和(自身を除く): 189519384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 125, 200, 211, 244, 250, 305, 400, 422, 488, 500, 610, 625, 844, 976, 1000, 1055, 1220, 1250, 1525, 1688, 2000, 2110, 2440, 2500, 3050, 3376, 4220, 4880, 5000, 5275, 6100, 7625, 8440, 10000, 10550, 12200, 12871, 15250, 16880, 21100, 24400, 25742, 26375, 30500, 38125, 42200, 51484, 52750, 61000, 64355, 76250, 84400, 102968, 105500, 122000, 128710, 131875, 152500, 205936, 211000, 257420, 263750, 305000, 321775, 422000, 514840, 527500, 610000, 643550, 1029680, 1055000, 1287100, 1608875, 2110000, 2574200, 3217750, 5148400, 6435500, 8044375, 12871000, 16088750, 25742000, 32177500, 64355000, 128710000]

約数ペア:

[(1, 128710000), (2, 64355000), (4, 32177500), (5, 25742000), (8, 16088750), (10, 12871000), (16, 8044375), (20, 6435500), (25, 5148400), (40, 3217750), (50, 2574200), (61, 2110000), (80, 1608875), (100, 1287100), (122, 1055000), (125, 1029680), (200, 643550), (211, 610000), (244, 527500), (250, 514840), (305, 422000), (400, 321775), (422, 305000), (488, 263750), (500, 257420), (610, 211000), (625, 205936), (844, 152500), (976, 131875), (1000, 128710), (1055, 122000), (1220, 105500), (1250, 102968), (1525, 84400), (1688, 76250), (2000, 64355), (2110, 61000), (2440, 52750), (2500, 51484), (3050, 42200), (3376, 38125), (4220, 30500), (4880, 26375), (5000, 25742), (5275, 24400), (6100, 21100), (7625, 16880), (8440, 15250), (10000, 12871), (10550, 12200)]