316500020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{269}}^1\times {\mathrm{661}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 675637200

約数和(自身を除く): 359137180

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 269, 356, 445, 538, 661, 890, 1076, 1322, 1345, 1780, 2644, 2690, 3305, 5380, 6610, 13220, 23941, 47882, 58829, 95764, 117658, 119705, 177809, 235316, 239410, 294145, 355618, 478820, 588290, 711236, 889045, 1176580, 1778090, 3556180, 15825001, 31650002, 63300004, 79125005, 158250010, 316500020]

約数ペア:

[(1, 316500020), (2, 158250010), (4, 79125005), (5, 63300004), (10, 31650002), (20, 15825001), (89, 3556180), (178, 1778090), (269, 1176580), (356, 889045), (445, 711236), (538, 588290), (661, 478820), (890, 355618), (1076, 294145), (1322, 239410), (1345, 235316), (1780, 177809), (2644, 119705), (2690, 117658), (3305, 95764), (5380, 58829), (6610, 47882), (13220, 23941)]