1261505960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{220543}}^1$

素因数の和:220578

約数の個数: 64

約数和(自身を含む): 3334625280

約数和(自身を除く): 2073119320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 5720, 220543, 441086, 882172, 1102715, 1764344, 2205430, 2425973, 2867059, 4410860, 4851946, 5734118, 8821720, 9703892, 11468236, 12129865, 14335295, 19407784, 22936472, 24259730, 28670590, 31537649, 48519460, 57341180, 63075298, 97038920, 114682360, 126150596, 157688245, 252301192, 315376490, 630752980, 1261505960]

約数ペア:

[(1, 1261505960), (2, 630752980), (4, 315376490), (5, 252301192), (8, 157688245), (10, 126150596), (11, 114682360), (13, 97038920), (20, 63075298), (22, 57341180), (26, 48519460), (40, 31537649), (44, 28670590), (52, 24259730), (55, 22936472), (65, 19407784), (88, 14335295), (104, 12129865), (110, 11468236), (130, 9703892), (143, 8821720), (220, 5734118), (260, 4851946), (286, 4410860), (440, 2867059), (520, 2425973), (572, 2205430), (715, 1764344), (1144, 1102715), (1430, 882172), (2860, 441086), (5720, 220543)]