20439930

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{743}}^1$

素因数の和:891

約数の個数: 64

約数和(自身を含む): 56567808

約数和(自身を除く): 36127878

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 131, 210, 262, 393, 655, 743, 786, 917, 1310, 1486, 1834, 1965, 2229, 2751, 3715, 3930, 4458, 4585, 5201, 5502, 7430, 9170, 10402, 11145, 13755, 15603, 22290, 26005, 27510, 31206, 52010, 78015, 97333, 156030, 194666, 291999, 486665, 583998, 681331, 973330, 1362662, 1459995, 2043993, 2919990, 3406655, 4087986, 6813310, 10219965, 20439930]

約数ペア:

[(1, 20439930), (2, 10219965), (3, 6813310), (5, 4087986), (6, 3406655), (7, 2919990), (10, 2043993), (14, 1459995), (15, 1362662), (21, 973330), (30, 681331), (35, 583998), (42, 486665), (70, 291999), (105, 194666), (131, 156030), (210, 97333), (262, 78015), (393, 52010), (655, 31206), (743, 27510), (786, 26005), (917, 22290), (1310, 15603), (1486, 13755), (1834, 11145), (1965, 10402), (2229, 9170), (2751, 7430), (3715, 5502), (3930, 5201), (4458, 4585)]