278751460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{4723}}^1$

素因数の和:4972

約数の個数: 48

約数和(自身を含む): 633318336

約数和(自身を除く): 354566876

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 227, 260, 454, 908, 1135, 2270, 2951, 4540, 4723, 5902, 9446, 11804, 14755, 18892, 23615, 29510, 47230, 59020, 61399, 94460, 122798, 245596, 306995, 613990, 1072121, 1227980, 2144242, 4288484, 5360605, 10721210, 13937573, 21442420, 27875146, 55750292, 69687865, 139375730, 278751460]

約数ペア:

[(1, 278751460), (2, 139375730), (4, 69687865), (5, 55750292), (10, 27875146), (13, 21442420), (20, 13937573), (26, 10721210), (52, 5360605), (65, 4288484), (130, 2144242), (227, 1227980), (260, 1072121), (454, 613990), (908, 306995), (1135, 245596), (2270, 122798), (2951, 94460), (4540, 61399), (4723, 59020), (5902, 47230), (9446, 29510), (11804, 23615), (14755, 18892)]