21591420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 63334656

約数和(自身を除く): 41743236

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 67, 82, 123, 131, 134, 164, 201, 205, 246, 262, 268, 335, 393, 402, 410, 492, 524, 615, 655, 670, 786, 804, 820, 1005, 1230, 1310, 1340, 1572, 1965, 2010, 2460, 2620, 2747, 3930, 4020, 5371, 5494, 7860, 8241, 8777, 10742, 10988, 13735, 16113, 16482, 17554, 21484, 26331, 26855, 27470, 32226, 32964, 35108, 41205, 43885, 52662, 53710, 54940, 64452, 80565, 82410, 87770, 105324, 107420, 131655, 161130, 164820, 175540, 263310, 322260, 359857, 526620, 719714, 1079571, 1439428, 1799285, 2159142, 3598570, 4318284, 5397855, 7197140, 10795710, 21591420]

約数ペア:

[(1, 21591420), (2, 10795710), (3, 7197140), (4, 5397855), (5, 4318284), (6, 3598570), (10, 2159142), (12, 1799285), (15, 1439428), (20, 1079571), (30, 719714), (41, 526620), (60, 359857), (67, 322260), (82, 263310), (123, 175540), (131, 164820), (134, 161130), (164, 131655), (201, 107420), (205, 105324), (246, 87770), (262, 82410), (268, 80565), (335, 64452), (393, 54940), (402, 53710), (410, 52662), (492, 43885), (524, 41205), (615, 35108), (655, 32964), (670, 32226), (786, 27470), (804, 26855), (820, 26331), (1005, 21484), (1230, 17554), (1310, 16482), (1340, 16113), (1572, 13735), (1965, 10988), (2010, 10742), (2460, 8777), (2620, 8241), (2747, 7860), (3930, 5494), (4020, 5371)]