18646480

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3821}}^1$

素因数の和:3895

約数の個数: 40

約数和(自身を含む): 44075304

約数和(自身を除く): 25428824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3821, 4880, 7642, 15284, 19105, 30568, 38210, 61136, 76420, 152840, 233081, 305680, 466162, 932324, 1165405, 1864648, 2330810, 3729296, 4661620, 9323240, 18646480]

約数ペア:

[(1, 18646480), (2, 9323240), (4, 4661620), (5, 3729296), (8, 2330810), (10, 1864648), (16, 1165405), (20, 932324), (40, 466162), (61, 305680), (80, 233081), (122, 152840), (244, 76420), (305, 61136), (488, 38210), (610, 30568), (976, 19105), (1220, 15284), (2440, 7642), (3821, 4880)]