21299928

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{293}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 57788640

約数和(自身を除く): 36488712

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 233, 293, 312, 466, 586, 699, 879, 932, 1172, 1398, 1758, 1864, 2344, 2796, 3029, 3516, 3809, 5592, 6058, 7032, 7618, 9087, 11427, 12116, 15236, 18174, 22854, 24232, 30472, 36348, 45708, 68269, 72696, 91416, 136538, 204807, 273076, 409614, 546152, 819228, 887497, 1638456, 1774994, 2662491, 3549988, 5324982, 7099976, 10649964, 21299928]

約数ペア:

[(1, 21299928), (2, 10649964), (3, 7099976), (4, 5324982), (6, 3549988), (8, 2662491), (12, 1774994), (13, 1638456), (24, 887497), (26, 819228), (39, 546152), (52, 409614), (78, 273076), (104, 204807), (156, 136538), (233, 91416), (293, 72696), (312, 68269), (466, 45708), (586, 36348), (699, 30472), (879, 24232), (932, 22854), (1172, 18174), (1398, 15236), (1758, 12116), (1864, 11427), (2344, 9087), (2796, 7618), (3029, 7032), (3516, 6058), (3809, 5592)]