72499980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{172619}}^1$

素因数の和:172638

約数の個数: 48

約数和(自身を含む): 232001280

約数和(自身を除く): 159501300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 172619, 345238, 517857, 690476, 863095, 1035714, 1208333, 1726190, 2071428, 2416666, 2589285, 3452380, 3624999, 4833332, 5178570, 6041665, 7249998, 10357140, 12083330, 14499996, 18124995, 24166660, 36249990, 72499980]

約数ペア:

[(1, 72499980), (2, 36249990), (3, 24166660), (4, 18124995), (5, 14499996), (6, 12083330), (7, 10357140), (10, 7249998), (12, 6041665), (14, 5178570), (15, 4833332), (20, 3624999), (21, 3452380), (28, 2589285), (30, 2416666), (35, 2071428), (42, 1726190), (60, 1208333), (70, 1035714), (84, 863095), (105, 690476), (140, 517857), (210, 345238), (420, 172619)]