12784850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 72

約数和(自身を含む): 27570780

約数和(自身を除く): 14785930

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 89, 130, 169, 170, 178, 221, 325, 338, 425, 442, 445, 650, 845, 850, 890, 1105, 1157, 1513, 1690, 2210, 2225, 2314, 2873, 3026, 4225, 4450, 5525, 5746, 5785, 7565, 8450, 11050, 11570, 14365, 15041, 15130, 19669, 28730, 28925, 30082, 37825, 39338, 57850, 71825, 75205, 75650, 98345, 143650, 150410, 196690, 255697, 376025, 491725, 511394, 752050, 983450, 1278485, 2556970, 6392425, 12784850]

約数ペア:

[(1, 12784850), (2, 6392425), (5, 2556970), (10, 1278485), (13, 983450), (17, 752050), (25, 511394), (26, 491725), (34, 376025), (50, 255697), (65, 196690), (85, 150410), (89, 143650), (130, 98345), (169, 75650), (170, 75205), (178, 71825), (221, 57850), (325, 39338), (338, 37825), (425, 30082), (442, 28925), (445, 28730), (650, 19669), (845, 15130), (850, 15041), (890, 14365), (1105, 11570), (1157, 11050), (1513, 8450), (1690, 7565), (2210, 5785), (2225, 5746), (2314, 5525), (2873, 4450), (3026, 4225)]