20660556

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{857}}^1$

素因数の和:919

約数の個数: 72

約数和(自身を含む): 57513456

約数和(自身を除く): 36852900

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 41, 42, 49, 82, 84, 98, 123, 147, 164, 196, 246, 287, 294, 492, 574, 588, 857, 861, 1148, 1714, 1722, 2009, 2571, 3428, 3444, 4018, 5142, 5999, 6027, 8036, 10284, 11998, 12054, 17997, 23996, 24108, 35137, 35994, 41993, 70274, 71988, 83986, 105411, 125979, 140548, 167972, 210822, 245959, 251958, 421644, 491918, 503916, 737877, 983836, 1475754, 1721713, 2951508, 3443426, 5165139, 6886852, 10330278, 20660556]

約数ペア:

[(1, 20660556), (2, 10330278), (3, 6886852), (4, 5165139), (6, 3443426), (7, 2951508), (12, 1721713), (14, 1475754), (21, 983836), (28, 737877), (41, 503916), (42, 491918), (49, 421644), (82, 251958), (84, 245959), (98, 210822), (123, 167972), (147, 140548), (164, 125979), (196, 105411), (246, 83986), (287, 71988), (294, 70274), (492, 41993), (574, 35994), (588, 35137), (857, 24108), (861, 23996), (1148, 17997), (1714, 12054), (1722, 11998), (2009, 10284), (2571, 8036), (3428, 6027), (3444, 5999), (4018, 5142)]