18539440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12197}}^1$

素因数の和:12229

約数の個数: 40

約数和(自身を含む): 45376560

約数和(自身を除く): 26837120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12197, 24394, 48788, 60985, 97576, 121970, 195152, 231743, 243940, 463486, 487880, 926972, 975760, 1158715, 1853944, 2317430, 3707888, 4634860, 9269720, 18539440]

約数ペア:

[(1, 18539440), (2, 9269720), (4, 4634860), (5, 3707888), (8, 2317430), (10, 1853944), (16, 1158715), (19, 975760), (20, 926972), (38, 487880), (40, 463486), (76, 243940), (80, 231743), (95, 195152), (152, 121970), (190, 97576), (304, 60985), (380, 48788), (760, 24394), (1520, 12197)]