81876780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19777}}^1$

素因数の和:19815

約数の個数: 72

約数和(自身を含む): 259170912

約数和(自身を除く): 177294132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 19777, 39554, 59331, 79108, 98885, 118662, 177993, 197770, 237324, 296655, 355986, 395540, 454871, 593310, 711972, 889965, 909742, 1186620, 1364613, 1779930, 1819484, 2274355, 2729226, 3559860, 4093839, 4548710, 5458452, 6823065, 8187678, 9097420, 13646130, 16375356, 20469195, 27292260, 40938390, 81876780]

約数ペア:

[(1, 81876780), (2, 40938390), (3, 27292260), (4, 20469195), (5, 16375356), (6, 13646130), (9, 9097420), (10, 8187678), (12, 6823065), (15, 5458452), (18, 4548710), (20, 4093839), (23, 3559860), (30, 2729226), (36, 2274355), (45, 1819484), (46, 1779930), (60, 1364613), (69, 1186620), (90, 909742), (92, 889965), (115, 711972), (138, 593310), (180, 454871), (207, 395540), (230, 355986), (276, 296655), (345, 237324), (414, 197770), (460, 177993), (690, 118662), (828, 98885), (1035, 79108), (1380, 59331), (2070, 39554), (4140, 19777)]