21311340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15443}}^1$

素因数の和:15478

約数の個数: 48

約数和(自身を含む): 62270208

約数和(自身を除く): 40958868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15443, 30886, 46329, 61772, 77215, 92658, 154430, 185316, 231645, 308860, 355189, 463290, 710378, 926580, 1065567, 1420756, 1775945, 2131134, 3551890, 4262268, 5327835, 7103780, 10655670, 21311340]

約数ペア:

[(1, 21311340), (2, 10655670), (3, 7103780), (4, 5327835), (5, 4262268), (6, 3551890), (10, 2131134), (12, 1775945), (15, 1420756), (20, 1065567), (23, 926580), (30, 710378), (46, 463290), (60, 355189), (69, 308860), (92, 231645), (115, 185316), (138, 154430), (230, 92658), (276, 77215), (345, 61772), (460, 46329), (690, 30886), (1380, 15443)]