21430400

素因数分解:

$2^7\times 5^2\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:242

約数の個数: 96

約数和(自身を含む): 54670980

約数和(自身を除く): 33240580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 50, 64, 74, 80, 100, 128, 148, 160, 181, 185, 200, 296, 320, 362, 370, 400, 592, 640, 724, 740, 800, 905, 925, 1184, 1448, 1480, 1600, 1810, 1850, 2368, 2896, 2960, 3200, 3620, 3700, 4525, 4736, 5792, 5920, 6697, 7240, 7400, 9050, 11584, 11840, 13394, 14480, 14800, 18100, 23168, 23680, 26788, 28960, 29600, 33485, 36200, 53576, 57920, 59200, 66970, 72400, 107152, 115840, 118400, 133940, 144800, 167425, 214304, 267880, 289600, 334850, 428608, 535760, 579200, 669700, 857216, 1071520, 1339400, 2143040, 2678800, 4286080, 5357600, 10715200, 21430400]

約数ペア:

[(1, 21430400), (2, 10715200), (4, 5357600), (5, 4286080), (8, 2678800), (10, 2143040), (16, 1339400), (20, 1071520), (25, 857216), (32, 669700), (37, 579200), (40, 535760), (50, 428608), (64, 334850), (74, 289600), (80, 267880), (100, 214304), (128, 167425), (148, 144800), (160, 133940), (181, 118400), (185, 115840), (200, 107152), (296, 72400), (320, 66970), (362, 59200), (370, 57920), (400, 53576), (592, 36200), (640, 33485), (724, 29600), (740, 28960), (800, 26788), (905, 23680), (925, 23168), (1184, 18100), (1448, 14800), (1480, 14480), (1600, 13394), (1810, 11840), (1850, 11584), (2368, 9050), (2896, 7400), (2960, 7240), (3200, 6697), (3620, 5920), (3700, 5792), (4525, 4736)]