21566025

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 42585816

約数和(自身を除く): 21019791

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 73, 75, 101, 117, 195, 219, 225, 303, 325, 365, 505, 585, 657, 909, 949, 975, 1095, 1313, 1515, 1825, 2525, 2847, 2925, 3285, 3939, 4545, 4745, 5475, 6565, 7373, 7575, 8541, 11817, 14235, 16425, 19695, 22119, 22725, 23725, 32825, 36865, 42705, 59085, 66357, 71175, 95849, 98475, 110595, 184325, 213525, 287547, 295425, 331785, 479245, 552975, 862641, 1437735, 1658925, 2396225, 4313205, 7188675, 21566025]

約数ペア:

[(1, 21566025), (3, 7188675), (5, 4313205), (9, 2396225), (13, 1658925), (15, 1437735), (25, 862641), (39, 552975), (45, 479245), (65, 331785), (73, 295425), (75, 287547), (101, 213525), (117, 184325), (195, 110595), (219, 98475), (225, 95849), (303, 71175), (325, 66357), (365, 59085), (505, 42705), (585, 36865), (657, 32825), (909, 23725), (949, 22725), (975, 22119), (1095, 19695), (1313, 16425), (1515, 14235), (1825, 11817), (2525, 8541), (2847, 7575), (2925, 7373), (3285, 6565), (3939, 5475), (4545, 4745)]