81853640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:423

約数の個数: 128

約数和(自身を含む): 220216320

約数和(自身を除く): 138362680

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 31, 34, 40, 44, 55, 62, 68, 85, 88, 110, 124, 136, 155, 170, 187, 220, 248, 310, 340, 341, 353, 374, 440, 527, 620, 680, 682, 706, 748, 935, 1054, 1240, 1364, 1412, 1496, 1705, 1765, 1870, 2108, 2635, 2728, 2824, 3410, 3530, 3740, 3883, 4216, 5270, 5797, 6001, 6820, 7060, 7480, 7766, 10540, 10943, 11594, 12002, 13640, 14120, 15532, 19415, 21080, 21886, 23188, 24004, 28985, 30005, 31064, 38830, 43772, 46376, 48008, 54715, 57970, 60010, 66011, 77660, 87544, 109430, 115940, 120020, 120373, 132022, 155320, 186031, 218860, 231880, 240040, 240746, 264044, 330055, 372062, 437720, 481492, 528088, 601865, 660110, 744124, 930155, 962984, 1203730, 1320220, 1488248, 1860310, 2046341, 2407460, 2640440, 3720620, 4092682, 4814920, 7441240, 8185364, 10231705, 16370728, 20463410, 40926820, 81853640]

約数ペア:

[(1, 81853640), (2, 40926820), (4, 20463410), (5, 16370728), (8, 10231705), (10, 8185364), (11, 7441240), (17, 4814920), (20, 4092682), (22, 3720620), (31, 2640440), (34, 2407460), (40, 2046341), (44, 1860310), (55, 1488248), (62, 1320220), (68, 1203730), (85, 962984), (88, 930155), (110, 744124), (124, 660110), (136, 601865), (155, 528088), (170, 481492), (187, 437720), (220, 372062), (248, 330055), (310, 264044), (340, 240746), (341, 240040), (353, 231880), (374, 218860), (440, 186031), (527, 155320), (620, 132022), (680, 120373), (682, 120020), (706, 115940), (748, 109430), (935, 87544), (1054, 77660), (1240, 66011), (1364, 60010), (1412, 57970), (1496, 54715), (1705, 48008), (1765, 46376), (1870, 43772), (2108, 38830), (2635, 31064), (2728, 30005), (2824, 28985), (3410, 24004), (3530, 23188), (3740, 21886), (3883, 21080), (4216, 19415), (5270, 15532), (5797, 14120), (6001, 13640), (6820, 12002), (7060, 11594), (7480, 10943), (7766, 10540)]