20643500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:132

約数の個数: 96

約数和(自身を含む): 49533120

約数和(自身を除く): 28889620

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 41, 50, 53, 76, 82, 95, 100, 106, 125, 164, 190, 205, 212, 250, 265, 380, 410, 475, 500, 530, 779, 820, 950, 1007, 1025, 1060, 1325, 1558, 1900, 2014, 2050, 2173, 2375, 2650, 3116, 3895, 4028, 4100, 4346, 4750, 5035, 5125, 5300, 6625, 7790, 8692, 9500, 10070, 10250, 10865, 13250, 15580, 19475, 20140, 20500, 21730, 25175, 26500, 38950, 41287, 43460, 50350, 54325, 77900, 82574, 97375, 100700, 108650, 125875, 165148, 194750, 206435, 217300, 251750, 271625, 389500, 412870, 503500, 543250, 825740, 1032175, 1086500, 2064350, 4128700, 5160875, 10321750, 20643500]

約数ペア:

[(1, 20643500), (2, 10321750), (4, 5160875), (5, 4128700), (10, 2064350), (19, 1086500), (20, 1032175), (25, 825740), (38, 543250), (41, 503500), (50, 412870), (53, 389500), (76, 271625), (82, 251750), (95, 217300), (100, 206435), (106, 194750), (125, 165148), (164, 125875), (190, 108650), (205, 100700), (212, 97375), (250, 82574), (265, 77900), (380, 54325), (410, 50350), (475, 43460), (500, 41287), (530, 38950), (779, 26500), (820, 25175), (950, 21730), (1007, 20500), (1025, 20140), (1060, 19475), (1325, 15580), (1558, 13250), (1900, 10865), (2014, 10250), (2050, 10070), (2173, 9500), (2375, 8692), (2650, 7790), (3116, 6625), (3895, 5300), (4028, 5125), (4100, 5035), (4346, 4750)]