20121232

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{359}}^1$

素因数の和:511

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 20590448

約数列:

[1, 2, 4, 8, 16, 31, 62, 113, 124, 226, 248, 359, 452, 496, 718, 904, 1436, 1808, 2872, 3503, 5744, 7006, 11129, 14012, 22258, 28024, 40567, 44516, 56048, 81134, 89032, 162268, 178064, 324536, 649072, 1257577, 2515154, 5030308, 10060616, 20121232]

約数ペア:

[(1, 20121232), (2, 10060616), (4, 5030308), (8, 2515154), (16, 1257577), (31, 649072), (62, 324536), (113, 178064), (124, 162268), (226, 89032), (248, 81134), (359, 56048), (452, 44516), (496, 40567), (718, 28024), (904, 22258), (1436, 14012), (1808, 11129), (2872, 7006), (3503, 5744)]