81101020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4051}}^1$

素因数の和:4091

約数の個数: 96

約数和(自身を含む): 228727296

約数和(自身を除く): 147626276

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 130, 140, 143, 154, 182, 220, 260, 286, 308, 364, 385, 455, 572, 715, 770, 910, 1001, 1430, 1540, 1820, 2002, 2860, 4004, 4051, 5005, 8102, 10010, 16204, 20020, 20255, 28357, 40510, 44561, 52663, 56714, 81020, 89122, 105326, 113428, 141785, 178244, 210652, 222805, 263315, 283570, 311927, 368641, 445610, 526630, 567140, 579293, 623854, 737282, 891220, 1053260, 1158586, 1247708, 1474564, 1559635, 1843205, 2317172, 2896465, 3119270, 3686410, 4055051, 5792930, 6238540, 7372820, 8110102, 11585860, 16220204, 20275255, 40550510, 81101020]

約数ペア:

[(1, 81101020), (2, 40550510), (4, 20275255), (5, 16220204), (7, 11585860), (10, 8110102), (11, 7372820), (13, 6238540), (14, 5792930), (20, 4055051), (22, 3686410), (26, 3119270), (28, 2896465), (35, 2317172), (44, 1843205), (52, 1559635), (55, 1474564), (65, 1247708), (70, 1158586), (77, 1053260), (91, 891220), (110, 737282), (130, 623854), (140, 579293), (143, 567140), (154, 526630), (182, 445610), (220, 368641), (260, 311927), (286, 283570), (308, 263315), (364, 222805), (385, 210652), (455, 178244), (572, 141785), (715, 113428), (770, 105326), (910, 89122), (1001, 81020), (1430, 56714), (1540, 52663), (1820, 44561), (2002, 40510), (2860, 28357), (4004, 20255), (4051, 20020), (5005, 16204), (8102, 10010)]