19884540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 63086688

約数和(自身を除く): 43202148

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 37, 39, 52, 53, 60, 65, 74, 78, 106, 111, 130, 148, 156, 159, 169, 185, 195, 212, 222, 260, 265, 318, 338, 370, 390, 444, 481, 507, 530, 555, 636, 676, 689, 740, 780, 795, 845, 962, 1014, 1060, 1110, 1378, 1443, 1590, 1690, 1924, 1961, 2028, 2067, 2220, 2405, 2535, 2756, 2886, 3180, 3380, 3445, 3922, 4134, 4810, 5070, 5772, 5883, 6253, 6890, 7215, 7844, 8268, 8957, 9620, 9805, 10140, 10335, 11766, 12506, 13780, 14430, 17914, 18759, 19610, 20670, 23532, 25012, 25493, 26871, 28860, 29415, 31265, 35828, 37518, 39220, 41340, 44785, 50986, 53742, 58830, 62530, 75036, 76479, 89570, 93795, 101972, 107484, 117660, 125060, 127465, 134355, 152958, 179140, 187590, 254930, 268710, 305916, 331409, 375180, 382395, 509860, 537420, 662818, 764790, 994227, 1325636, 1529580, 1657045, 1988454, 3314090, 3976908, 4971135, 6628180, 9942270, 19884540]

約数ペア:

[(1, 19884540), (2, 9942270), (3, 6628180), (4, 4971135), (5, 3976908), (6, 3314090), (10, 1988454), (12, 1657045), (13, 1529580), (15, 1325636), (20, 994227), (26, 764790), (30, 662818), (37, 537420), (39, 509860), (52, 382395), (53, 375180), (60, 331409), (65, 305916), (74, 268710), (78, 254930), (106, 187590), (111, 179140), (130, 152958), (148, 134355), (156, 127465), (159, 125060), (169, 117660), (185, 107484), (195, 101972), (212, 93795), (222, 89570), (260, 76479), (265, 75036), (318, 62530), (338, 58830), (370, 53742), (390, 50986), (444, 44785), (481, 41340), (507, 39220), (530, 37518), (555, 35828), (636, 31265), (676, 29415), (689, 28860), (740, 26871), (780, 25493), (795, 25012), (845, 23532), (962, 20670), (1014, 19610), (1060, 18759), (1110, 17914), (1378, 14430), (1443, 13780), (1590, 12506), (1690, 11766), (1924, 10335), (1961, 10140), (2028, 9805), (2067, 9620), (2220, 8957), (2405, 8268), (2535, 7844), (2756, 7215), (2886, 6890), (3180, 6253), (3380, 5883), (3445, 5772), (3922, 5070), (4134, 4810)]