19847340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1553}}^1$

素因数の和:1639

約数の個数: 72

約数和(自身を含む): 61090848

約数和(自身を除く): 41243508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1553, 2130, 2556, 3106, 3195, 4260, 4659, 6212, 6390, 7765, 9318, 12780, 13977, 15530, 18636, 23295, 27954, 31060, 46590, 55908, 69885, 93180, 110263, 139770, 220526, 279540, 330789, 441052, 551315, 661578, 992367, 1102630, 1323156, 1653945, 1984734, 2205260, 3307890, 3969468, 4961835, 6615780, 9923670, 19847340]

約数ペア:

[(1, 19847340), (2, 9923670), (3, 6615780), (4, 4961835), (5, 3969468), (6, 3307890), (9, 2205260), (10, 1984734), (12, 1653945), (15, 1323156), (18, 1102630), (20, 992367), (30, 661578), (36, 551315), (45, 441052), (60, 330789), (71, 279540), (90, 220526), (142, 139770), (180, 110263), (213, 93180), (284, 69885), (355, 55908), (426, 46590), (639, 31060), (710, 27954), (852, 23295), (1065, 18636), (1278, 15530), (1420, 13977), (1553, 12780), (2130, 9318), (2556, 7765), (3106, 6390), (3195, 6212), (4260, 4659)]