20789025985

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{68501}}^1$

素因数の和:68578

約数の個数: 64

約数和(自身を含む): 33144007680

約数和(自身を除く): 12354981695

約数列:

[1, 5, 7, 13, 23, 29, 35, 65, 91, 115, 145, 161, 203, 299, 377, 455, 667, 805, 1015, 1495, 1885, 2093, 2639, 3335, 4669, 8671, 10465, 13195, 23345, 43355, 60697, 68501, 303485, 342505, 479507, 890513, 1575523, 1986529, 2397535, 4452565, 6233591, 7877615, 9932645, 11028661, 13905703, 20481799, 25824877, 31167955, 45690167, 55143305, 69528515, 102408995, 129124385, 143372593, 180774139, 228450835, 319831169, 593972171, 716862965, 903870695, 1599155845, 2969860855, 4157805197, 20789025985]

約数ペア:

[(1, 20789025985), (5, 4157805197), (7, 2969860855), (13, 1599155845), (23, 903870695), (29, 716862965), (35, 593972171), (65, 319831169), (91, 228450835), (115, 180774139), (145, 143372593), (161, 129124385), (203, 102408995), (299, 69528515), (377, 55143305), (455, 45690167), (667, 31167955), (805, 25824877), (1015, 20481799), (1495, 13905703), (1885, 11028661), (2093, 9932645), (2639, 7877615), (3335, 6233591), (4669, 4452565), (8671, 2397535), (10465, 1986529), (13195, 1575523), (23345, 890513), (43355, 479507), (60697, 342505), (68501, 303485)]