388679980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{6203}}^1$

素因数の和:6466

約数の個数: 48

約数和(自身を含む): 882804384

約数和(自身を除く): 494124404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 241, 260, 482, 964, 1205, 2410, 3133, 4820, 6203, 6266, 12406, 12532, 15665, 24812, 31015, 31330, 62030, 62660, 80639, 124060, 161278, 322556, 403195, 806390, 1494923, 1612780, 2989846, 5979692, 7474615, 14949230, 19433999, 29898460, 38867998, 77735996, 97169995, 194339990, 388679980]

約数ペア:

[(1, 388679980), (2, 194339990), (4, 97169995), (5, 77735996), (10, 38867998), (13, 29898460), (20, 19433999), (26, 14949230), (52, 7474615), (65, 5979692), (130, 2989846), (241, 1612780), (260, 1494923), (482, 806390), (964, 403195), (1205, 322556), (2410, 161278), (3133, 124060), (4820, 80639), (6203, 62660), (6266, 62030), (12406, 31330), (12532, 31015), (15665, 24812)]