21388822

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:293

約数の個数: 64

約数和(自身を含む): 43352064

約数和(自身を除く): 21963242

約数列:

[1, 2, 7, 13, 14, 17, 26, 31, 34, 62, 91, 119, 182, 217, 221, 223, 238, 403, 434, 442, 446, 527, 806, 1054, 1547, 1561, 2821, 2899, 3094, 3122, 3689, 3791, 5642, 5798, 6851, 6913, 7378, 7582, 13702, 13826, 20293, 26537, 40586, 47957, 48391, 49283, 53074, 89869, 95914, 96782, 98566, 117521, 179738, 235042, 344981, 629083, 689962, 822647, 1258166, 1527773, 1645294, 3055546, 10694411, 21388822]

約数ペア:

[(1, 21388822), (2, 10694411), (7, 3055546), (13, 1645294), (14, 1527773), (17, 1258166), (26, 822647), (31, 689962), (34, 629083), (62, 344981), (91, 235042), (119, 179738), (182, 117521), (217, 98566), (221, 96782), (223, 95914), (238, 89869), (403, 53074), (434, 49283), (442, 48391), (446, 47957), (527, 40586), (806, 26537), (1054, 20293), (1547, 13826), (1561, 13702), (2821, 7582), (2899, 7378), (3094, 6913), (3122, 6851), (3689, 5798), (3791, 5642)]