21850380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6389}}^1$

素因数の和:6423

約数の個数: 72

約数和(自身を含む): 69778800

約数和(自身を除く): 47928420

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, 6389, 12778, 19167, 25556, 31945, 38334, 57501, 63890, 76668, 95835, 115002, 121391, 127780, 191670, 230004, 242782, 287505, 364173, 383340, 485564, 575010, 606955, 728346, 1092519, 1150020, 1213910, 1456692, 1820865, 2185038, 2427820, 3641730, 4370076, 5462595, 7283460, 10925190, 21850380]

約数ペア:

[(1, 21850380), (2, 10925190), (3, 7283460), (4, 5462595), (5, 4370076), (6, 3641730), (9, 2427820), (10, 2185038), (12, 1820865), (15, 1456692), (18, 1213910), (19, 1150020), (20, 1092519), (30, 728346), (36, 606955), (38, 575010), (45, 485564), (57, 383340), (60, 364173), (76, 287505), (90, 242782), (95, 230004), (114, 191670), (171, 127780), (180, 121391), (190, 115002), (228, 95835), (285, 76668), (342, 63890), (380, 57501), (570, 38334), (684, 31945), (855, 25556), (1140, 19167), (1710, 12778), (3420, 6389)]