20477100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^3\times {\mathrm{199}}^1$

素因数の和:237

約数の個数: 144

約数和(自身を含む): 69440000

約数和(自身を除く): 48962900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 49, 50, 60, 70, 75, 84, 98, 100, 105, 140, 147, 150, 175, 196, 199, 210, 245, 294, 300, 343, 350, 398, 420, 490, 525, 588, 597, 686, 700, 735, 796, 980, 995, 1029, 1050, 1194, 1225, 1372, 1393, 1470, 1715, 1990, 2058, 2100, 2388, 2450, 2786, 2940, 2985, 3430, 3675, 3980, 4116, 4179, 4900, 4975, 5145, 5572, 5970, 6860, 6965, 7350, 8358, 8575, 9751, 9950, 10290, 11940, 13930, 14700, 14925, 16716, 17150, 19502, 19900, 20580, 20895, 25725, 27860, 29253, 29850, 34300, 34825, 39004, 41790, 48755, 51450, 58506, 59700, 68257, 69650, 83580, 97510, 102900, 104475, 117012, 136514, 139300, 146265, 195020, 204771, 208950, 243775, 273028, 292530, 341285, 409542, 417900, 487550, 585060, 682570, 731325, 819084, 975100, 1023855, 1365140, 1462650, 1706425, 2047710, 2925300, 3412850, 4095420, 5119275, 6825700, 10238550, 20477100]

約数ペア:

[(1, 20477100), (2, 10238550), (3, 6825700), (4, 5119275), (5, 4095420), (6, 3412850), (7, 2925300), (10, 2047710), (12, 1706425), (14, 1462650), (15, 1365140), (20, 1023855), (21, 975100), (25, 819084), (28, 731325), (30, 682570), (35, 585060), (42, 487550), (49, 417900), (50, 409542), (60, 341285), (70, 292530), (75, 273028), (84, 243775), (98, 208950), (100, 204771), (105, 195020), (140, 146265), (147, 139300), (150, 136514), (175, 117012), (196, 104475), (199, 102900), (210, 97510), (245, 83580), (294, 69650), (300, 68257), (343, 59700), (350, 58506), (398, 51450), (420, 48755), (490, 41790), (525, 39004), (588, 34825), (597, 34300), (686, 29850), (700, 29253), (735, 27860), (796, 25725), (980, 20895), (995, 20580), (1029, 19900), (1050, 19502), (1194, 17150), (1225, 16716), (1372, 14925), (1393, 14700), (1470, 13930), (1715, 11940), (1990, 10290), (2058, 9950), (2100, 9751), (2388, 8575), (2450, 8358), (2786, 7350), (2940, 6965), (2985, 6860), (3430, 5970), (3675, 5572), (3980, 5145), (4116, 4975), (4179, 4900)]