20308730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 40437144

約数和(自身を除く): 20128414

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 169, 197, 305, 338, 394, 610, 793, 845, 985, 1586, 1690, 1970, 2561, 3965, 5122, 7930, 10309, 12017, 12805, 20618, 24034, 25610, 33293, 51545, 60085, 66586, 103090, 120170, 156221, 166465, 312442, 332930, 781105, 1562210, 2030873, 4061746, 10154365, 20308730]

約数ペア:

[(1, 20308730), (2, 10154365), (5, 4061746), (10, 2030873), (13, 1562210), (26, 781105), (61, 332930), (65, 312442), (122, 166465), (130, 156221), (169, 120170), (197, 103090), (305, 66586), (338, 60085), (394, 51545), (610, 33293), (793, 25610), (845, 24034), (985, 20618), (1586, 12805), (1690, 12017), (1970, 10309), (2561, 7930), (3965, 5122)]