19966485890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{291439}}^1$

素因数の和:291507

約数の個数: 64

約数和(自身を含む): 42303098880

約数和(自身を除く): 22336612990

約数列:

[1, 2, 5, 10, 13, 17, 26, 31, 34, 62, 65, 85, 130, 155, 170, 221, 310, 403, 442, 527, 806, 1054, 1105, 2015, 2210, 2635, 4030, 5270, 6851, 13702, 34255, 68510, 291439, 582878, 1457195, 2914390, 3788707, 4954463, 7577414, 9034609, 9908926, 18069218, 18943535, 24772315, 37887070, 45173045, 49544630, 64408019, 90346090, 117449917, 128816038, 153588353, 234899834, 307176706, 322040095, 587249585, 644080190, 767941765, 1174499170, 1535883530, 1996648589, 3993297178, 9983242945, 19966485890]

約数ペア:

[(1, 19966485890), (2, 9983242945), (5, 3993297178), (10, 1996648589), (13, 1535883530), (17, 1174499170), (26, 767941765), (31, 644080190), (34, 587249585), (62, 322040095), (65, 307176706), (85, 234899834), (130, 153588353), (155, 128816038), (170, 117449917), (221, 90346090), (310, 64408019), (403, 49544630), (442, 45173045), (527, 37887070), (806, 24772315), (1054, 18943535), (1105, 18069218), (2015, 9908926), (2210, 9034609), (2635, 7577414), (4030, 4954463), (5270, 3788707), (6851, 2914390), (13702, 1457195), (34255, 582878), (68510, 291439)]