20895250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 42456960

約数和(自身を除く): 21561710

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 53, 83, 95, 106, 125, 166, 190, 250, 265, 415, 475, 530, 830, 950, 1007, 1325, 1577, 2014, 2075, 2375, 2650, 3154, 4150, 4399, 4750, 5035, 6625, 7885, 8798, 10070, 10375, 13250, 15770, 20750, 21995, 25175, 39425, 43990, 50350, 78850, 83581, 109975, 125875, 167162, 197125, 219950, 251750, 394250, 417905, 549875, 835810, 1099750, 2089525, 4179050, 10447625, 20895250]

約数ペア:

[(1, 20895250), (2, 10447625), (5, 4179050), (10, 2089525), (19, 1099750), (25, 835810), (38, 549875), (50, 417905), (53, 394250), (83, 251750), (95, 219950), (106, 197125), (125, 167162), (166, 125875), (190, 109975), (250, 83581), (265, 78850), (415, 50350), (475, 43990), (530, 39425), (830, 25175), (950, 21995), (1007, 20750), (1325, 15770), (1577, 13250), (2014, 10375), (2075, 10070), (2375, 8798), (2650, 7885), (3154, 6625), (4150, 5035), (4399, 4750)]