15690612440

素因数分解:

$2^3\times 5^1\times {\mathrm{6421}}^1\times {\mathrm{61091}}^1$

素因数の和:67523

約数の個数: 32

約数和(自身を含む): 35309954160

約数和(自身を除く): 19619341720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6421, 12842, 25684, 32105, 51368, 61091, 64210, 122182, 128420, 244364, 256840, 305455, 488728, 610910, 1221820, 2443640, 392265311, 784530622, 1569061244, 1961326555, 3138122488, 3922653110, 7845306220, 15690612440]

約数ペア:

[(1, 15690612440), (2, 7845306220), (4, 3922653110), (5, 3138122488), (8, 1961326555), (10, 1569061244), (20, 784530622), (40, 392265311), (6421, 2443640), (12842, 1221820), (25684, 610910), (32105, 488728), (51368, 305455), (61091, 256840), (64210, 244364), (122182, 128420)]