28389998

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{401}}^1$

素因数の和:812

約数の個数: 32

約数和(自身を含む): 52678080

約数和(自身を除く): 24288082

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 389, 401, 778, 802, 2723, 2807, 5057, 5213, 5446, 5614, 10114, 10426, 35399, 36491, 70798, 72982, 155989, 311978, 1091923, 2027857, 2183846, 4055714, 14194999, 28389998]

約数ペア:

[(1, 28389998), (2, 14194999), (7, 4055714), (13, 2183846), (14, 2027857), (26, 1091923), (91, 311978), (182, 155989), (389, 72982), (401, 70798), (778, 36491), (802, 35399), (2723, 10426), (2807, 10114), (5057, 5614), (5213, 5446)]