638288637

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{13267}}^1$

素因数の和:13385

約数の個数: 32

約数和(自身を含む): 1018982400

約数和(自身を除く): 380693763

約数列:

[1, 3, 7, 21, 29, 79, 87, 203, 237, 553, 609, 1659, 2291, 6873, 13267, 16037, 39801, 48111, 92869, 278607, 384743, 1048093, 1154229, 2693201, 3144279, 7336651, 8079603, 22009953, 30394697, 91184091, 212762879, 638288637]

約数ペア:

[(1, 638288637), (3, 212762879), (7, 91184091), (21, 30394697), (29, 22009953), (79, 8079603), (87, 7336651), (203, 3144279), (237, 2693201), (553, 1154229), (609, 1048093), (1659, 384743), (2291, 278607), (6873, 92869), (13267, 48111), (16037, 39801)]