19872180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{977}}^1$

素因数の和:1105

約数の個数: 72

約数和(自身を含む): 60874632

約数和(自身を除く): 41002452

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 113, 180, 226, 339, 452, 565, 678, 977, 1017, 1130, 1356, 1695, 1954, 2034, 2260, 2931, 3390, 3908, 4068, 4885, 5085, 5862, 6780, 8793, 9770, 10170, 11724, 14655, 17586, 19540, 20340, 29310, 35172, 43965, 58620, 87930, 110401, 175860, 220802, 331203, 441604, 552005, 662406, 993609, 1104010, 1324812, 1656015, 1987218, 2208020, 3312030, 3974436, 4968045, 6624060, 9936090, 19872180]

約数ペア:

[(1, 19872180), (2, 9936090), (3, 6624060), (4, 4968045), (5, 3974436), (6, 3312030), (9, 2208020), (10, 1987218), (12, 1656015), (15, 1324812), (18, 1104010), (20, 993609), (30, 662406), (36, 552005), (45, 441604), (60, 331203), (90, 220802), (113, 175860), (180, 110401), (226, 87930), (339, 58620), (452, 43965), (565, 35172), (678, 29310), (977, 20340), (1017, 19540), (1130, 17586), (1356, 14655), (1695, 11724), (1954, 10170), (2034, 9770), (2260, 8793), (2931, 6780), (3390, 5862), (3908, 5085), (4068, 4885)]