28405000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:81

約数の個数: 160

約数和(自身を含む): 78724800

約数和(自身を除く): 50319800

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 23, 25, 26, 38, 40, 46, 50, 52, 65, 76, 92, 95, 100, 104, 115, 125, 130, 152, 184, 190, 200, 230, 247, 250, 260, 299, 325, 380, 437, 460, 475, 494, 500, 520, 575, 598, 625, 650, 760, 874, 920, 950, 988, 1000, 1150, 1196, 1235, 1250, 1300, 1495, 1625, 1748, 1900, 1976, 2185, 2300, 2375, 2392, 2470, 2500, 2600, 2875, 2990, 3250, 3496, 3800, 4370, 4600, 4750, 4940, 5000, 5681, 5750, 5980, 6175, 6500, 7475, 8125, 8740, 9500, 9880, 10925, 11362, 11500, 11875, 11960, 12350, 13000, 14375, 14950, 16250, 17480, 19000, 21850, 22724, 23000, 23750, 24700, 28405, 28750, 29900, 30875, 32500, 37375, 43700, 45448, 47500, 49400, 54625, 56810, 57500, 59800, 61750, 65000, 74750, 87400, 95000, 109250, 113620, 115000, 123500, 142025, 149500, 154375, 186875, 218500, 227240, 247000, 273125, 284050, 299000, 308750, 373750, 437000, 546250, 568100, 617500, 710125, 747500, 1092500, 1136200, 1235000, 1420250, 1495000, 2185000, 2840500, 3550625, 5681000, 7101250, 14202500, 28405000]

約数ペア:

[(1, 28405000), (2, 14202500), (4, 7101250), (5, 5681000), (8, 3550625), (10, 2840500), (13, 2185000), (19, 1495000), (20, 1420250), (23, 1235000), (25, 1136200), (26, 1092500), (38, 747500), (40, 710125), (46, 617500), (50, 568100), (52, 546250), (65, 437000), (76, 373750), (92, 308750), (95, 299000), (100, 284050), (104, 273125), (115, 247000), (125, 227240), (130, 218500), (152, 186875), (184, 154375), (190, 149500), (200, 142025), (230, 123500), (247, 115000), (250, 113620), (260, 109250), (299, 95000), (325, 87400), (380, 74750), (437, 65000), (460, 61750), (475, 59800), (494, 57500), (500, 56810), (520, 54625), (575, 49400), (598, 47500), (625, 45448), (650, 43700), (760, 37375), (874, 32500), (920, 30875), (950, 29900), (988, 28750), (1000, 28405), (1150, 24700), (1196, 23750), (1235, 23000), (1250, 22724), (1300, 21850), (1495, 19000), (1625, 17480), (1748, 16250), (1900, 14950), (1976, 14375), (2185, 13000), (2300, 12350), (2375, 11960), (2392, 11875), (2470, 11500), (2500, 11362), (2600, 10925), (2875, 9880), (2990, 9500), (3250, 8740), (3496, 8125), (3800, 7475), (4370, 6500), (4600, 6175), (4750, 5980), (4940, 5750), (5000, 5681)]