28537691

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 36747648

約数和(自身を除く): 8209957

約数列:

[1, 7, 13, 53, 61, 91, 97, 371, 427, 679, 689, 793, 1261, 3233, 4823, 5141, 5551, 5917, 8827, 22631, 35987, 41419, 42029, 66833, 76921, 294203, 313601, 467831, 538447, 2195207, 4076813, 28537691]

約数ペア:

[(1, 28537691), (7, 4076813), (13, 2195207), (53, 538447), (61, 467831), (91, 313601), (97, 294203), (371, 76921), (427, 66833), (679, 42029), (689, 41419), (793, 35987), (1261, 22631), (3233, 8827), (4823, 5917), (5141, 5551)]