20576790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:478

約数の個数: 96

約数和(自身を含む): 59099040

約数和(自身を除く): 38522250

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 43, 45, 65, 78, 86, 90, 117, 129, 130, 195, 215, 234, 258, 387, 390, 409, 430, 559, 585, 645, 774, 818, 1118, 1170, 1227, 1290, 1677, 1935, 2045, 2454, 2795, 3354, 3681, 3870, 4090, 5031, 5317, 5590, 6135, 7362, 8385, 10062, 10634, 12270, 15951, 16770, 17587, 18405, 25155, 26585, 31902, 35174, 36810, 47853, 50310, 52761, 53170, 79755, 87935, 95706, 105522, 158283, 159510, 175870, 228631, 239265, 263805, 316566, 457262, 478530, 527610, 685893, 791415, 1143155, 1371786, 1582830, 2057679, 2286310, 3429465, 4115358, 6858930, 10288395, 20576790]

約数ペア:

[(1, 20576790), (2, 10288395), (3, 6858930), (5, 4115358), (6, 3429465), (9, 2286310), (10, 2057679), (13, 1582830), (15, 1371786), (18, 1143155), (26, 791415), (30, 685893), (39, 527610), (43, 478530), (45, 457262), (65, 316566), (78, 263805), (86, 239265), (90, 228631), (117, 175870), (129, 159510), (130, 158283), (195, 105522), (215, 95706), (234, 87935), (258, 79755), (387, 53170), (390, 52761), (409, 50310), (430, 47853), (559, 36810), (585, 35174), (645, 31902), (774, 26585), (818, 25155), (1118, 18405), (1170, 17587), (1227, 16770), (1290, 15951), (1677, 12270), (1935, 10634), (2045, 10062), (2454, 8385), (2795, 7362), (3354, 6135), (3681, 5590), (3870, 5317), (4090, 5031)]