19879600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3823}}^1$

素因数の和:3854

約数の個数: 60

約数和(自身を含む): 51448096

約数和(自身を除く): 31568496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 3823, 5200, 7646, 15292, 19115, 30584, 38230, 49699, 61168, 76460, 95575, 99398, 152920, 191150, 198796, 248495, 305840, 382300, 397592, 496990, 764600, 795184, 993980, 1242475, 1529200, 1987960, 2484950, 3975920, 4969900, 9939800, 19879600]

約数ペア:

[(1, 19879600), (2, 9939800), (4, 4969900), (5, 3975920), (8, 2484950), (10, 1987960), (13, 1529200), (16, 1242475), (20, 993980), (25, 795184), (26, 764600), (40, 496990), (50, 397592), (52, 382300), (65, 305840), (80, 248495), (100, 198796), (104, 191150), (130, 152920), (200, 99398), (208, 95575), (260, 76460), (325, 61168), (400, 49699), (520, 38230), (650, 30584), (1040, 19115), (1300, 15292), (2600, 7646), (3823, 5200)]