81987180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{491}}^1$

素因数の和:548

約数の個数: 144

約数和(自身を含む): 263837952

約数和(自身を除く): 181850772

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 23, 30, 33, 44, 46, 55, 60, 66, 69, 92, 110, 115, 121, 132, 138, 165, 220, 230, 242, 253, 276, 330, 345, 363, 460, 484, 491, 506, 605, 660, 690, 726, 759, 982, 1012, 1210, 1265, 1380, 1452, 1473, 1518, 1815, 1964, 2420, 2455, 2530, 2783, 2946, 3036, 3630, 3795, 4910, 5060, 5401, 5566, 5892, 7260, 7365, 7590, 8349, 9820, 10802, 11132, 11293, 13915, 14730, 15180, 16203, 16698, 21604, 22586, 27005, 27830, 29460, 32406, 33396, 33879, 41745, 45172, 54010, 55660, 56465, 59411, 64812, 67758, 81015, 83490, 108020, 112930, 118822, 124223, 135516, 162030, 166980, 169395, 178233, 225860, 237644, 248446, 297055, 324060, 338790, 356466, 372669, 496892, 594110, 621115, 677580, 712932, 745338, 891165, 1188220, 1242230, 1366453, 1490676, 1782330, 1863345, 2484460, 2732906, 3564660, 3726690, 4099359, 5465812, 6832265, 7453380, 8198718, 13664530, 16397436, 20496795, 27329060, 40993590, 81987180]

約数ペア:

[(1, 81987180), (2, 40993590), (3, 27329060), (4, 20496795), (5, 16397436), (6, 13664530), (10, 8198718), (11, 7453380), (12, 6832265), (15, 5465812), (20, 4099359), (22, 3726690), (23, 3564660), (30, 2732906), (33, 2484460), (44, 1863345), (46, 1782330), (55, 1490676), (60, 1366453), (66, 1242230), (69, 1188220), (92, 891165), (110, 745338), (115, 712932), (121, 677580), (132, 621115), (138, 594110), (165, 496892), (220, 372669), (230, 356466), (242, 338790), (253, 324060), (276, 297055), (330, 248446), (345, 237644), (363, 225860), (460, 178233), (484, 169395), (491, 166980), (506, 162030), (605, 135516), (660, 124223), (690, 118822), (726, 112930), (759, 108020), (982, 83490), (1012, 81015), (1210, 67758), (1265, 64812), (1380, 59411), (1452, 56465), (1473, 55660), (1518, 54010), (1815, 45172), (1964, 41745), (2420, 33879), (2455, 33396), (2530, 32406), (2783, 29460), (2946, 27830), (3036, 27005), (3630, 22586), (3795, 21604), (4910, 16698), (5060, 16203), (5401, 15180), (5566, 14730), (5892, 13915), (7260, 11293), (7365, 11132), (7590, 10802), (8349, 9820)]