31781984

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4021}}^1$

素因数の和:4063

約数の個数: 48

約数和(自身を含む): 70948080

約数和(自身を除く): 39166096

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 3952, 4021, 7904, 8042, 16084, 32168, 52273, 64336, 76399, 104546, 128672, 152798, 209092, 305596, 418184, 611192, 836368, 993187, 1222384, 1672736, 1986374, 2444768, 3972748, 7945496, 15890992, 31781984]

約数ペア:

[(1, 31781984), (2, 15890992), (4, 7945496), (8, 3972748), (13, 2444768), (16, 1986374), (19, 1672736), (26, 1222384), (32, 993187), (38, 836368), (52, 611192), (76, 418184), (104, 305596), (152, 209092), (208, 152798), (247, 128672), (304, 104546), (416, 76399), (494, 64336), (608, 52273), (988, 32168), (1976, 16084), (3952, 8042), (4021, 7904)]