20628412

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 45849888

約数和(自身を除く): 25221476

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 41, 49, 68, 82, 98, 119, 151, 164, 196, 238, 287, 302, 476, 574, 604, 697, 833, 1057, 1148, 1394, 1666, 2009, 2114, 2567, 2788, 3332, 4018, 4228, 4879, 5134, 6191, 7399, 8036, 9758, 10268, 12382, 14798, 17969, 19516, 24764, 29596, 34153, 35938, 43337, 68306, 71876, 86674, 105247, 125783, 136612, 173348, 210494, 251566, 303359, 420988, 503132, 606718, 736729, 1213436, 1473458, 2946916, 5157103, 10314206, 20628412]

約数ペア:

[(1, 20628412), (2, 10314206), (4, 5157103), (7, 2946916), (14, 1473458), (17, 1213436), (28, 736729), (34, 606718), (41, 503132), (49, 420988), (68, 303359), (82, 251566), (98, 210494), (119, 173348), (151, 136612), (164, 125783), (196, 105247), (238, 86674), (287, 71876), (302, 68306), (476, 43337), (574, 35938), (604, 34153), (697, 29596), (833, 24764), (1057, 19516), (1148, 17969), (1394, 14798), (1666, 12382), (2009, 10268), (2114, 9758), (2567, 8036), (2788, 7399), (3332, 6191), (4018, 5134), (4228, 4879)]