87781900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{983}}^1$

素因数の和:1063

約数の個数: 72

約数和(自身を含む): 204986880

約数和(自身を除く): 117204980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 47, 50, 76, 94, 95, 100, 188, 190, 235, 380, 470, 475, 893, 940, 950, 983, 1175, 1786, 1900, 1966, 2350, 3572, 3932, 4465, 4700, 4915, 8930, 9830, 17860, 18677, 19660, 22325, 24575, 37354, 44650, 46201, 49150, 74708, 89300, 92402, 93385, 98300, 184804, 186770, 231005, 373540, 462010, 466925, 877819, 924020, 933850, 1155025, 1755638, 1867700, 2310050, 3511276, 4389095, 4620100, 8778190, 17556380, 21945475, 43890950, 87781900]

約数ペア:

[(1, 87781900), (2, 43890950), (4, 21945475), (5, 17556380), (10, 8778190), (19, 4620100), (20, 4389095), (25, 3511276), (38, 2310050), (47, 1867700), (50, 1755638), (76, 1155025), (94, 933850), (95, 924020), (100, 877819), (188, 466925), (190, 462010), (235, 373540), (380, 231005), (470, 186770), (475, 184804), (893, 98300), (940, 93385), (950, 92402), (983, 89300), (1175, 74708), (1786, 49150), (1900, 46201), (1966, 44650), (2350, 37354), (3572, 24575), (3932, 22325), (4465, 19660), (4700, 18677), (4915, 17860), (8930, 9830)]