21853760

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2203}}^1$

素因数の和:2251

約数の個数: 56

約数和(自身を含む): 53742336

約数和(自身を除く): 31888576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2203, 2480, 4406, 4960, 8812, 9920, 11015, 17624, 22030, 35248, 44060, 68293, 70496, 88120, 136586, 140992, 176240, 273172, 341465, 352480, 546344, 682930, 704960, 1092688, 1365860, 2185376, 2731720, 4370752, 5463440, 10926880, 21853760]

約数ペア:

[(1, 21853760), (2, 10926880), (4, 5463440), (5, 4370752), (8, 2731720), (10, 2185376), (16, 1365860), (20, 1092688), (31, 704960), (32, 682930), (40, 546344), (62, 352480), (64, 341465), (80, 273172), (124, 176240), (155, 140992), (160, 136586), (248, 88120), (310, 70496), (320, 68293), (496, 44060), (620, 35248), (992, 22030), (1240, 17624), (1984, 11015), (2203, 9920), (2480, 8812), (4406, 4960)]