18871860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^4\times {\mathrm{131}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 62114976

約数和(自身を除く): 43243116

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 131, 140, 147, 196, 210, 245, 262, 294, 343, 393, 420, 490, 524, 588, 655, 686, 735, 786, 917, 980, 1029, 1310, 1372, 1470, 1572, 1715, 1834, 1965, 2058, 2401, 2620, 2751, 2940, 3430, 3668, 3930, 4116, 4585, 4802, 5145, 5502, 6419, 6860, 7203, 7860, 9170, 9604, 10290, 11004, 12005, 12838, 13755, 14406, 18340, 19257, 20580, 24010, 25676, 27510, 28812, 32095, 36015, 38514, 44933, 48020, 55020, 64190, 72030, 77028, 89866, 96285, 128380, 134799, 144060, 179732, 192570, 224665, 269598, 314531, 385140, 449330, 539196, 629062, 673995, 898660, 943593, 1258124, 1347990, 1572655, 1887186, 2695980, 3145310, 3774372, 4717965, 6290620, 9435930, 18871860]

約数ペア:

[(1, 18871860), (2, 9435930), (3, 6290620), (4, 4717965), (5, 3774372), (6, 3145310), (7, 2695980), (10, 1887186), (12, 1572655), (14, 1347990), (15, 1258124), (20, 943593), (21, 898660), (28, 673995), (30, 629062), (35, 539196), (42, 449330), (49, 385140), (60, 314531), (70, 269598), (84, 224665), (98, 192570), (105, 179732), (131, 144060), (140, 134799), (147, 128380), (196, 96285), (210, 89866), (245, 77028), (262, 72030), (294, 64190), (343, 55020), (393, 48020), (420, 44933), (490, 38514), (524, 36015), (588, 32095), (655, 28812), (686, 27510), (735, 25676), (786, 24010), (917, 20580), (980, 19257), (1029, 18340), (1310, 14406), (1372, 13755), (1470, 12838), (1572, 12005), (1715, 11004), (1834, 10290), (1965, 9604), (2058, 9170), (2401, 7860), (2620, 7203), (2751, 6860), (2940, 6419), (3430, 5502), (3668, 5145), (3930, 4802), (4116, 4585)]