81616210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:403

約数の個数: 64

約数和(自身を含む): 168376320

約数和(自身を除く): 86760110

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 173, 190, 191, 247, 346, 382, 494, 865, 955, 1235, 1730, 1910, 2249, 2470, 2483, 3287, 3629, 4498, 4966, 6574, 7258, 11245, 12415, 16435, 18145, 22490, 24830, 32870, 33043, 36290, 42731, 47177, 66086, 85462, 94354, 165215, 213655, 235885, 330430, 427310, 429559, 471770, 627817, 859118, 1255634, 2147795, 3139085, 4295590, 6278170, 8161621, 16323242, 40808105, 81616210]

約数ペア:

[(1, 81616210), (2, 40808105), (5, 16323242), (10, 8161621), (13, 6278170), (19, 4295590), (26, 3139085), (38, 2147795), (65, 1255634), (95, 859118), (130, 627817), (173, 471770), (190, 429559), (191, 427310), (247, 330430), (346, 235885), (382, 213655), (494, 165215), (865, 94354), (955, 85462), (1235, 66086), (1730, 47177), (1910, 42731), (2249, 36290), (2470, 33043), (2483, 32870), (3287, 24830), (3629, 22490), (4498, 18145), (4966, 16435), (6574, 12415), (7258, 11245)]