21263291294

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1\times {\mathrm{257}}^1\times {\mathrm{313}}^1$

素因数の和:897

約数の個数: 64

約数和(自身を含む): 37330329600

約数和(自身を除く): 16067038306

約数列:

[1, 2, 7, 14, 79, 158, 239, 257, 313, 478, 514, 553, 626, 1106, 1673, 1799, 2191, 3346, 3598, 4382, 18881, 20303, 24727, 37762, 40606, 49454, 61423, 74807, 80441, 122846, 132167, 142121, 149614, 160882, 173089, 264334, 284242, 346178, 429961, 523649, 563087, 859922, 1047298, 1126174, 4852417, 5909753, 6354839, 9704834, 11819506, 12709678, 19225399, 33966919, 38450798, 41368271, 44483873, 67933838, 82736542, 88967746, 134577793, 269155586, 1518806521, 3037613042, 10631645647, 21263291294]

約数ペア:

[(1, 21263291294), (2, 10631645647), (7, 3037613042), (14, 1518806521), (79, 269155586), (158, 134577793), (239, 88967746), (257, 82736542), (313, 67933838), (478, 44483873), (514, 41368271), (553, 38450798), (626, 33966919), (1106, 19225399), (1673, 12709678), (1799, 11819506), (2191, 9704834), (3346, 6354839), (3598, 5909753), (4382, 4852417), (18881, 1126174), (20303, 1047298), (24727, 859922), (37762, 563087), (40606, 523649), (49454, 429961), (61423, 346178), (74807, 284242), (80441, 264334), (122846, 173089), (132167, 160882), (142121, 149614)]