20642838

素因数分解:

$2^1\times 3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24976362

約数列:

[1, 2, 3, 6, 29, 31, 43, 58, 62, 86, 87, 89, 93, 129, 174, 178, 186, 258, 267, 534, 899, 1247, 1333, 1798, 2494, 2581, 2666, 2697, 2759, 3741, 3827, 3999, 5162, 5394, 5518, 7482, 7654, 7743, 7998, 8277, 11481, 15486, 16554, 22962, 38657, 77314, 80011, 110983, 115971, 118637, 160022, 221966, 231942, 237274, 240033, 332949, 355911, 480066, 665898, 711822, 3440473, 6880946, 10321419, 20642838]

約数ペア:

[(1, 20642838), (2, 10321419), (3, 6880946), (6, 3440473), (29, 711822), (31, 665898), (43, 480066), (58, 355911), (62, 332949), (86, 240033), (87, 237274), (89, 231942), (93, 221966), (129, 160022), (174, 118637), (178, 115971), (186, 110983), (258, 80011), (267, 77314), (534, 38657), (899, 22962), (1247, 16554), (1333, 15486), (1798, 11481), (2494, 8277), (2581, 7998), (2666, 7743), (2697, 7654), (2759, 7482), (3741, 5518), (3827, 5394), (3999, 5162)]