21000953365

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{95989}}^1$

素因数の和:96074

約数の個数: 48

約数和(自身を含む): 31515436800

約数和(自身を除く): 10514483435

約数列:

[1, 5, 7, 19, 35, 47, 49, 95, 133, 235, 245, 329, 665, 893, 931, 1645, 2303, 4465, 4655, 6251, 11515, 31255, 43757, 95989, 218785, 479945, 671923, 1823791, 3359615, 4511483, 4703461, 9118955, 12766537, 22557415, 23517305, 31580381, 63832685, 85718177, 89365759, 157901905, 221062667, 428590885, 446828795, 600027239, 1105313335, 3000136195, 4200190673, 21000953365]

約数ペア:

[(1, 21000953365), (5, 4200190673), (7, 3000136195), (19, 1105313335), (35, 600027239), (47, 446828795), (49, 428590885), (95, 221062667), (133, 157901905), (235, 89365759), (245, 85718177), (329, 63832685), (665, 31580381), (893, 23517305), (931, 22557415), (1645, 12766537), (2303, 9118955), (4465, 4703461), (4655, 4511483), (6251, 3359615), (11515, 1823791), (31255, 671923), (43757, 479945), (95989, 218785)]