28993910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 60264000

約数和(自身を除く): 31270090

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 61, 110, 122, 145, 149, 290, 298, 305, 319, 610, 638, 671, 745, 1342, 1490, 1595, 1639, 1769, 3190, 3278, 3355, 3538, 4321, 6710, 8195, 8642, 8845, 9089, 16390, 17690, 18178, 19459, 21605, 38918, 43210, 45445, 47531, 90890, 95062, 97295, 99979, 194590, 199958, 237655, 263581, 475310, 499895, 527162, 999790, 1317905, 2635810, 2899391, 5798782, 14496955, 28993910]

約数ペア:

[(1, 28993910), (2, 14496955), (5, 5798782), (10, 2899391), (11, 2635810), (22, 1317905), (29, 999790), (55, 527162), (58, 499895), (61, 475310), (110, 263581), (122, 237655), (145, 199958), (149, 194590), (290, 99979), (298, 97295), (305, 95062), (319, 90890), (610, 47531), (638, 45445), (671, 43210), (745, 38918), (1342, 21605), (1490, 19459), (1595, 18178), (1639, 17690), (1769, 16390), (3190, 9089), (3278, 8845), (3355, 8642), (3538, 8195), (4321, 6710)]