21170000

素因数分解:

$2^4\times 5^4\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:130

約数の個数: 100

約数和(自身を含む): 53748420

約数和(自身を除く): 32578420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 73, 80, 100, 116, 125, 145, 146, 200, 232, 250, 290, 292, 365, 400, 464, 500, 580, 584, 625, 725, 730, 1000, 1160, 1168, 1250, 1450, 1460, 1825, 2000, 2117, 2320, 2500, 2900, 2920, 3625, 3650, 4234, 5000, 5800, 5840, 7250, 7300, 8468, 9125, 10000, 10585, 11600, 14500, 14600, 16936, 18125, 18250, 21170, 29000, 29200, 33872, 36250, 36500, 42340, 45625, 52925, 58000, 72500, 73000, 84680, 91250, 105850, 145000, 146000, 169360, 182500, 211700, 264625, 290000, 365000, 423400, 529250, 730000, 846800, 1058500, 1323125, 2117000, 2646250, 4234000, 5292500, 10585000, 21170000]

約数ペア:

[(1, 21170000), (2, 10585000), (4, 5292500), (5, 4234000), (8, 2646250), (10, 2117000), (16, 1323125), (20, 1058500), (25, 846800), (29, 730000), (40, 529250), (50, 423400), (58, 365000), (73, 290000), (80, 264625), (100, 211700), (116, 182500), (125, 169360), (145, 146000), (146, 145000), (200, 105850), (232, 91250), (250, 84680), (290, 73000), (292, 72500), (365, 58000), (400, 52925), (464, 45625), (500, 42340), (580, 36500), (584, 36250), (625, 33872), (725, 29200), (730, 29000), (1000, 21170), (1160, 18250), (1168, 18125), (1250, 16936), (1450, 14600), (1460, 14500), (1825, 11600), (2000, 10585), (2117, 10000), (2320, 9125), (2500, 8468), (2900, 7300), (2920, 7250), (3625, 5840), (3650, 5800), (4234, 5000)]