2990000

素因数分解:

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

素因数の和:64

約数の個数: 100

約数和(自身を含む): 8134896

約数和(自身を除く): 5144896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 25, 26, 40, 46, 50, 52, 65, 80, 92, 100, 104, 115, 125, 130, 184, 200, 208, 230, 250, 260, 299, 325, 368, 400, 460, 500, 520, 575, 598, 625, 650, 920, 1000, 1040, 1150, 1196, 1250, 1300, 1495, 1625, 1840, 2000, 2300, 2392, 2500, 2600, 2875, 2990, 3250, 4600, 4784, 5000, 5200, 5750, 5980, 6500, 7475, 8125, 9200, 10000, 11500, 11960, 13000, 14375, 14950, 16250, 23000, 23920, 26000, 28750, 29900, 32500, 37375, 46000, 57500, 59800, 65000, 74750, 115000, 119600, 130000, 149500, 186875, 230000, 299000, 373750, 598000, 747500, 1495000, 2990000]

約数ペア:

[(1, 2990000), (2, 1495000), (4, 747500), (5, 598000), (8, 373750), (10, 299000), (13, 230000), (16, 186875), (20, 149500), (23, 130000), (25, 119600), (26, 115000), (40, 74750), (46, 65000), (50, 59800), (52, 57500), (65, 46000), (80, 37375), (92, 32500), (100, 29900), (104, 28750), (115, 26000), (125, 23920), (130, 23000), (184, 16250), (200, 14950), (208, 14375), (230, 13000), (250, 11960), (260, 11500), (299, 10000), (325, 9200), (368, 8125), (400, 7475), (460, 6500), (500, 5980), (520, 5750), (575, 5200), (598, 5000), (625, 4784), (650, 4600), (920, 3250), (1000, 2990), (1040, 2875), (1150, 2600), (1196, 2500), (1250, 2392), (1300, 2300), (1495, 2000), (1625, 1840)]