21801618

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:567

約数の個数: 48

約数和(自身を含む): 49420800

約数和(自身を除く): 27619182

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 89, 93, 178, 186, 267, 279, 439, 534, 558, 801, 878, 1317, 1602, 2634, 2759, 3951, 5518, 7902, 8277, 13609, 16554, 24831, 27218, 39071, 40827, 49662, 78142, 81654, 117213, 122481, 234426, 244962, 351639, 703278, 1211201, 2422402, 3633603, 7267206, 10900809, 21801618]

約数ペア:

[(1, 21801618), (2, 10900809), (3, 7267206), (6, 3633603), (9, 2422402), (18, 1211201), (31, 703278), (62, 351639), (89, 244962), (93, 234426), (178, 122481), (186, 117213), (267, 81654), (279, 78142), (439, 49662), (534, 40827), (558, 39071), (801, 27218), (878, 24831), (1317, 16554), (1602, 13609), (2634, 8277), (2759, 7902), (3951, 5518)]