20111700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 68023424

約数和(自身を除く): 47911724

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 61, 70, 75, 84, 100, 105, 122, 140, 150, 157, 175, 183, 210, 244, 300, 305, 314, 350, 366, 420, 427, 471, 525, 610, 628, 700, 732, 785, 854, 915, 942, 1050, 1099, 1220, 1281, 1525, 1570, 1708, 1830, 1884, 2100, 2135, 2198, 2355, 2562, 3050, 3140, 3297, 3660, 3925, 4270, 4396, 4575, 4710, 5124, 5495, 6100, 6405, 6594, 7850, 8540, 9150, 9420, 9577, 10675, 10990, 11775, 12810, 13188, 15700, 16485, 18300, 19154, 21350, 21980, 23550, 25620, 27475, 28731, 32025, 32970, 38308, 42700, 47100, 47885, 54950, 57462, 64050, 65940, 67039, 82425, 95770, 109900, 114924, 128100, 134078, 143655, 164850, 191540, 201117, 239425, 268156, 287310, 329700, 335195, 402234, 478850, 574620, 670390, 718275, 804468, 957700, 1005585, 1340780, 1436550, 1675975, 2011170, 2873100, 3351950, 4022340, 5027925, 6703900, 10055850, 20111700]

約数ペア:

[(1, 20111700), (2, 10055850), (3, 6703900), (4, 5027925), (5, 4022340), (6, 3351950), (7, 2873100), (10, 2011170), (12, 1675975), (14, 1436550), (15, 1340780), (20, 1005585), (21, 957700), (25, 804468), (28, 718275), (30, 670390), (35, 574620), (42, 478850), (50, 402234), (60, 335195), (61, 329700), (70, 287310), (75, 268156), (84, 239425), (100, 201117), (105, 191540), (122, 164850), (140, 143655), (150, 134078), (157, 128100), (175, 114924), (183, 109900), (210, 95770), (244, 82425), (300, 67039), (305, 65940), (314, 64050), (350, 57462), (366, 54950), (420, 47885), (427, 47100), (471, 42700), (525, 38308), (610, 32970), (628, 32025), (700, 28731), (732, 27475), (785, 25620), (854, 23550), (915, 21980), (942, 21350), (1050, 19154), (1099, 18300), (1220, 16485), (1281, 15700), (1525, 13188), (1570, 12810), (1708, 11775), (1830, 10990), (1884, 10675), (2100, 9577), (2135, 9420), (2198, 9150), (2355, 8540), (2562, 7850), (3050, 6594), (3140, 6405), (3297, 6100), (3660, 5495), (3925, 5124), (4270, 4710), (4396, 4575)]