28789865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 38810016

約数和(自身を除く): 10020151

約数列:

[1, 5, 13, 53, 61, 65, 137, 265, 305, 685, 689, 793, 1781, 3233, 3445, 3965, 7261, 8357, 8905, 16165, 36305, 41785, 42029, 94393, 108641, 210145, 442921, 471965, 543205, 2214605, 5757973, 28789865]

約数ペア:

[(1, 28789865), (5, 5757973), (13, 2214605), (53, 543205), (61, 471965), (65, 442921), (137, 210145), (265, 108641), (305, 94393), (685, 42029), (689, 41785), (793, 36305), (1781, 16165), (3233, 8905), (3445, 8357), (3965, 7261)]