18751280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7561}}^1$

素因数の和:7605

約数の個数: 40

約数和(自身を含む): 45009024

約数和(自身を除く): 26257744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7561, 15122, 30244, 37805, 60488, 75610, 120976, 151220, 234391, 302440, 468782, 604880, 937564, 1171955, 1875128, 2343910, 3750256, 4687820, 9375640, 18751280]

約数ペア:

[(1, 18751280), (2, 9375640), (4, 4687820), (5, 3750256), (8, 2343910), (10, 1875128), (16, 1171955), (20, 937564), (31, 604880), (40, 468782), (62, 302440), (80, 234391), (124, 151220), (155, 120976), (248, 75610), (310, 60488), (496, 37805), (620, 30244), (1240, 15122), (2480, 7561)]