19912940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{593}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 44307648

約数和(自身を除く): 24394708

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 73, 92, 115, 146, 230, 292, 365, 460, 593, 730, 1186, 1460, 1679, 2372, 2965, 3358, 5930, 6716, 8395, 11860, 13639, 16790, 27278, 33580, 43289, 54556, 68195, 86578, 136390, 173156, 216445, 272780, 432890, 865780, 995647, 1991294, 3982588, 4978235, 9956470, 19912940]

約数ペア:

[(1, 19912940), (2, 9956470), (4, 4978235), (5, 3982588), (10, 1991294), (20, 995647), (23, 865780), (46, 432890), (73, 272780), (92, 216445), (115, 173156), (146, 136390), (230, 86578), (292, 68195), (365, 54556), (460, 43289), (593, 33580), (730, 27278), (1186, 16790), (1460, 13639), (1679, 11860), (2372, 8395), (2965, 6716), (3358, 5930)]