28747355

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 46061568

約数和(自身を除く): 17314213

約数列:

[1, 5, 7, 13, 23, 35, 41, 65, 67, 91, 115, 161, 205, 287, 299, 335, 455, 469, 533, 805, 871, 943, 1435, 1495, 1541, 2093, 2345, 2665, 2747, 3731, 4355, 4715, 6097, 6601, 7705, 10465, 10787, 12259, 13735, 18655, 19229, 20033, 30485, 33005, 35711, 53935, 61295, 63181, 85813, 96145, 100165, 140231, 178555, 249977, 315905, 429065, 442267, 701155, 821353, 1249885, 2211335, 4106765, 5749471, 28747355]

約数ペア:

[(1, 28747355), (5, 5749471), (7, 4106765), (13, 2211335), (23, 1249885), (35, 821353), (41, 701155), (65, 442267), (67, 429065), (91, 315905), (115, 249977), (161, 178555), (205, 140231), (287, 100165), (299, 96145), (335, 85813), (455, 63181), (469, 61295), (533, 53935), (805, 35711), (871, 33005), (943, 30485), (1435, 20033), (1495, 19229), (1541, 18655), (2093, 13735), (2345, 12259), (2665, 10787), (2747, 10465), (3731, 7705), (4355, 6601), (4715, 6097)]