21131800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:185

約数の個数: 96

約数和(自身を含む): 53121600

約数和(自身を除く): 31989800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 67, 76, 83, 95, 100, 134, 152, 166, 190, 200, 268, 332, 335, 380, 415, 475, 536, 664, 670, 760, 830, 950, 1273, 1340, 1577, 1660, 1675, 1900, 2075, 2546, 2680, 3154, 3320, 3350, 3800, 4150, 5092, 5561, 6308, 6365, 6700, 7885, 8300, 10184, 11122, 12616, 12730, 13400, 15770, 16600, 22244, 25460, 27805, 31540, 31825, 39425, 44488, 50920, 55610, 63080, 63650, 78850, 105659, 111220, 127300, 139025, 157700, 211318, 222440, 254600, 278050, 315400, 422636, 528295, 556100, 845272, 1056590, 1112200, 2113180, 2641475, 4226360, 5282950, 10565900, 21131800]

約数ペア:

[(1, 21131800), (2, 10565900), (4, 5282950), (5, 4226360), (8, 2641475), (10, 2113180), (19, 1112200), (20, 1056590), (25, 845272), (38, 556100), (40, 528295), (50, 422636), (67, 315400), (76, 278050), (83, 254600), (95, 222440), (100, 211318), (134, 157700), (152, 139025), (166, 127300), (190, 111220), (200, 105659), (268, 78850), (332, 63650), (335, 63080), (380, 55610), (415, 50920), (475, 44488), (536, 39425), (664, 31825), (670, 31540), (760, 27805), (830, 25460), (950, 22244), (1273, 16600), (1340, 15770), (1577, 13400), (1660, 12730), (1675, 12616), (1900, 11122), (2075, 10184), (2546, 8300), (2680, 7885), (3154, 6700), (3320, 6365), (3350, 6308), (3800, 5561), (4150, 5092)]