2021000455

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:424

約数の個数: 64

約数和(自身を含む): 2764108800

約数和(自身を除く): 743108345

約数列:

[1, 5, 19, 23, 59, 61, 95, 115, 257, 295, 305, 437, 1121, 1159, 1285, 1357, 1403, 2185, 3599, 4883, 5605, 5795, 5911, 6785, 7015, 15163, 15677, 17995, 24415, 25783, 26657, 29555, 68381, 75815, 78385, 82777, 112309, 128915, 133285, 288097, 297863, 341905, 348749, 360571, 413885, 561545, 924943, 1440485, 1489315, 1572763, 1743745, 1802855, 4624715, 6626231, 6850849, 7863815, 17573917, 21273689, 33131155, 34254245, 87869585, 106368445, 404200091, 2021000455]

約数ペア:

[(1, 2021000455), (5, 404200091), (19, 106368445), (23, 87869585), (59, 34254245), (61, 33131155), (95, 21273689), (115, 17573917), (257, 7863815), (295, 6850849), (305, 6626231), (437, 4624715), (1121, 1802855), (1159, 1743745), (1285, 1572763), (1357, 1489315), (1403, 1440485), (2185, 924943), (3599, 561545), (4883, 413885), (5605, 360571), (5795, 348749), (5911, 341905), (6785, 297863), (7015, 288097), (15163, 133285), (15677, 128915), (17995, 112309), (24415, 82777), (25783, 78385), (26657, 75815), (29555, 68381)]