991100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:95

約数の個数: 72

約数和(自身を含む): 2531088

約数和(自身を除く): 1539988

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 53, 55, 68, 85, 100, 106, 110, 170, 187, 212, 220, 265, 275, 340, 374, 425, 530, 550, 583, 748, 850, 901, 935, 1060, 1100, 1166, 1325, 1700, 1802, 1870, 2332, 2650, 2915, 3604, 3740, 4505, 4675, 5300, 5830, 9010, 9350, 9911, 11660, 14575, 18020, 18700, 19822, 22525, 29150, 39644, 45050, 49555, 58300, 90100, 99110, 198220, 247775, 495550, 991100]

約数ペア:

[(1, 991100), (2, 495550), (4, 247775), (5, 198220), (10, 99110), (11, 90100), (17, 58300), (20, 49555), (22, 45050), (25, 39644), (34, 29150), (44, 22525), (50, 19822), (53, 18700), (55, 18020), (68, 14575), (85, 11660), (100, 9911), (106, 9350), (110, 9010), (170, 5830), (187, 5300), (212, 4675), (220, 4505), (265, 3740), (275, 3604), (340, 2915), (374, 2650), (425, 2332), (530, 1870), (550, 1802), (583, 1700), (748, 1325), (850, 1166), (901, 1100), (935, 1060)]