490822540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{21211}}^1$

素因数の和:21322

約数の個数: 48

約数和(自身を含む): 1122539040

約数和(自身を除く): 631716500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 890, 1157, 1780, 2314, 4628, 5785, 11570, 21211, 23140, 42422, 84844, 106055, 212110, 275743, 424220, 551486, 1102972, 1378715, 1887779, 2757430, 3775558, 5514860, 7551116, 9438895, 18877790, 24541127, 37755580, 49082254, 98164508, 122705635, 245411270, 490822540]

約数ペア:

[(1, 490822540), (2, 245411270), (4, 122705635), (5, 98164508), (10, 49082254), (13, 37755580), (20, 24541127), (26, 18877790), (52, 9438895), (65, 7551116), (89, 5514860), (130, 3775558), (178, 2757430), (260, 1887779), (356, 1378715), (445, 1102972), (890, 551486), (1157, 424220), (1780, 275743), (2314, 212110), (4628, 106055), (5785, 84844), (11570, 42422), (21211, 23140)]