128103700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{353}}^1$

素因数の和:577

約数の個数: 72

約数和(自身を含む): 294981120

約数和(自身を除く): 166877420

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 191, 353, 380, 382, 475, 706, 764, 950, 955, 1412, 1765, 1900, 1910, 3530, 3629, 3820, 4775, 6707, 7060, 7258, 8825, 9550, 13414, 14516, 17650, 18145, 19100, 26828, 33535, 35300, 36290, 67070, 67423, 72580, 90725, 134140, 134846, 167675, 181450, 269692, 335350, 337115, 362900, 670700, 674230, 1281037, 1348460, 1685575, 2562074, 3371150, 5124148, 6405185, 6742300, 12810370, 25620740, 32025925, 64051850, 128103700]

約数ペア:

[(1, 128103700), (2, 64051850), (4, 32025925), (5, 25620740), (10, 12810370), (19, 6742300), (20, 6405185), (25, 5124148), (38, 3371150), (50, 2562074), (76, 1685575), (95, 1348460), (100, 1281037), (190, 674230), (191, 670700), (353, 362900), (380, 337115), (382, 335350), (475, 269692), (706, 181450), (764, 167675), (950, 134846), (955, 134140), (1412, 90725), (1765, 72580), (1900, 67423), (1910, 67070), (3530, 36290), (3629, 35300), (3820, 33535), (4775, 26828), (6707, 19100), (7060, 18145), (7258, 17650), (8825, 14516), (9550, 13414)]