19907820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{5821}}^1$

素因数の和:5855

約数の個数: 72

約数和(自身を含む): 63576240

約数和(自身を除く): 43668420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 5821, 11642, 17463, 23284, 29105, 34926, 52389, 58210, 69852, 87315, 104778, 110599, 116420, 174630, 209556, 221198, 261945, 331797, 349260, 442396, 523890, 552995, 663594, 995391, 1047780, 1105990, 1327188, 1658985, 1990782, 2211980, 3317970, 3981564, 4976955, 6635940, 9953910, 19907820]

約数ペア:

[(1, 19907820), (2, 9953910), (3, 6635940), (4, 4976955), (5, 3981564), (6, 3317970), (9, 2211980), (10, 1990782), (12, 1658985), (15, 1327188), (18, 1105990), (19, 1047780), (20, 995391), (30, 663594), (36, 552995), (38, 523890), (45, 442396), (57, 349260), (60, 331797), (76, 261945), (90, 221198), (95, 209556), (114, 174630), (171, 116420), (180, 110599), (190, 104778), (228, 87315), (285, 69852), (342, 58210), (380, 52389), (570, 34926), (684, 29105), (855, 23284), (1140, 17463), (1710, 11642), (3420, 5821)]