18781900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{3079}}^1$

素因数の和:3154

約数の個数: 36

約数和(自身を含む): 41438320

約数和(自身を除く): 22656420

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 3079, 6100, 6158, 12316, 15395, 30790, 61580, 76975, 153950, 187819, 307900, 375638, 751276, 939095, 1878190, 3756380, 4695475, 9390950, 18781900]

約数ペア:

[(1, 18781900), (2, 9390950), (4, 4695475), (5, 3756380), (10, 1878190), (20, 939095), (25, 751276), (50, 375638), (61, 307900), (100, 187819), (122, 153950), (244, 76975), (305, 61580), (610, 30790), (1220, 15395), (1525, 12316), (3050, 6158), (3079, 6100)]