41991980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{761}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 92171520

約数和(自身を除く): 50179540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 761, 890, 1522, 1780, 2759, 3044, 3805, 5518, 7610, 11036, 13795, 15220, 23591, 27590, 47182, 55180, 67729, 94364, 117955, 135458, 235910, 270916, 338645, 471820, 677290, 1354580, 2099599, 4199198, 8398396, 10497995, 20995990, 41991980]

約数ペア:

[(1, 41991980), (2, 20995990), (4, 10497995), (5, 8398396), (10, 4199198), (20, 2099599), (31, 1354580), (62, 677290), (89, 471820), (124, 338645), (155, 270916), (178, 235910), (310, 135458), (356, 117955), (445, 94364), (620, 67729), (761, 55180), (890, 47182), (1522, 27590), (1780, 23591), (2759, 15220), (3044, 13795), (3805, 11036), (5518, 7610)]