208717460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{2393}}^1$

素因数の和:2505

約数の個数: 72

約数和(自身を含む): 515811240

約数和(自身を除く): 307093780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 356, 445, 490, 623, 890, 980, 1246, 1780, 2393, 2492, 3115, 4361, 4786, 6230, 8722, 9572, 11965, 12460, 16751, 17444, 21805, 23930, 33502, 43610, 47860, 67004, 83755, 87220, 117257, 167510, 212977, 234514, 335020, 425954, 469028, 586285, 851908, 1064885, 1172570, 1490839, 2129770, 2345140, 2981678, 4259540, 5963356, 7454195, 10435873, 14908390, 20871746, 29816780, 41743492, 52179365, 104358730, 208717460]

約数ペア:

[(1, 208717460), (2, 104358730), (4, 52179365), (5, 41743492), (7, 29816780), (10, 20871746), (14, 14908390), (20, 10435873), (28, 7454195), (35, 5963356), (49, 4259540), (70, 2981678), (89, 2345140), (98, 2129770), (140, 1490839), (178, 1172570), (196, 1064885), (245, 851908), (356, 586285), (445, 469028), (490, 425954), (623, 335020), (890, 234514), (980, 212977), (1246, 167510), (1780, 117257), (2393, 87220), (2492, 83755), (3115, 67004), (4361, 47860), (4786, 43610), (6230, 33502), (8722, 23930), (9572, 21805), (11965, 17444), (12460, 16751)]