51132780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4001}}^1$

素因数の和:4087

約数の個数: 72

約数和(自身を含む): 157326624

約数和(自身を除く): 106193844

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2556, 3195, 4001, 4260, 6390, 8002, 12003, 12780, 16004, 20005, 24006, 36009, 40010, 48012, 60015, 72018, 80020, 120030, 144036, 180045, 240060, 284071, 360090, 568142, 720180, 852213, 1136284, 1420355, 1704426, 2556639, 2840710, 3408852, 4261065, 5113278, 5681420, 8522130, 10226556, 12783195, 17044260, 25566390, 51132780]

約数ペア:

[(1, 51132780), (2, 25566390), (3, 17044260), (4, 12783195), (5, 10226556), (6, 8522130), (9, 5681420), (10, 5113278), (12, 4261065), (15, 3408852), (18, 2840710), (20, 2556639), (30, 1704426), (36, 1420355), (45, 1136284), (60, 852213), (71, 720180), (90, 568142), (142, 360090), (180, 284071), (213, 240060), (284, 180045), (355, 144036), (426, 120030), (639, 80020), (710, 72018), (852, 60015), (1065, 48012), (1278, 40010), (1420, 36009), (2130, 24006), (2556, 20005), (3195, 16004), (4001, 12780), (4260, 12003), (6390, 8002)]