128456420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{5639}}^1$

素因数の和:5732

約数の個数: 48

約数和(自身を含む): 289941120

約数和(自身を除く): 161484700

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 1139, 1340, 2278, 4556, 5639, 5695, 11278, 11390, 22556, 22780, 28195, 56390, 95863, 112780, 191726, 377813, 383452, 479315, 755626, 958630, 1511252, 1889065, 1917260, 3778130, 6422821, 7556260, 12845642, 25691284, 32114105, 64228210, 128456420]

約数ペア:

[(1, 128456420), (2, 64228210), (4, 32114105), (5, 25691284), (10, 12845642), (17, 7556260), (20, 6422821), (34, 3778130), (67, 1917260), (68, 1889065), (85, 1511252), (134, 958630), (170, 755626), (268, 479315), (335, 383452), (340, 377813), (670, 191726), (1139, 112780), (1340, 95863), (2278, 56390), (4556, 28195), (5639, 22780), (5695, 22556), (11278, 11390)]