81804840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1279}}^1$

素因数の和:1347

約数の個数: 128

約数和(自身を含む): 270950400

約数和(自身を除く): 189145560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 41, 52, 60, 65, 78, 82, 104, 120, 123, 130, 156, 164, 195, 205, 246, 260, 312, 328, 390, 410, 492, 520, 533, 615, 780, 820, 984, 1066, 1230, 1279, 1560, 1599, 1640, 2132, 2460, 2558, 2665, 3198, 3837, 4264, 4920, 5116, 5330, 6395, 6396, 7674, 7995, 10232, 10660, 12790, 12792, 15348, 15990, 16627, 19185, 21320, 25580, 30696, 31980, 33254, 38370, 49881, 51160, 52439, 63960, 66508, 76740, 83135, 99762, 104878, 133016, 153480, 157317, 166270, 199524, 209756, 249405, 262195, 314634, 332540, 399048, 419512, 498810, 524390, 629268, 665080, 681707, 786585, 997620, 1048780, 1258536, 1363414, 1573170, 1995240, 2045121, 2097560, 2726828, 3146340, 3408535, 4090242, 5453656, 6292680, 6817070, 8180484, 10225605, 13634140, 16360968, 20451210, 27268280, 40902420, 81804840]

約数ペア:

[(1, 81804840), (2, 40902420), (3, 27268280), (4, 20451210), (5, 16360968), (6, 13634140), (8, 10225605), (10, 8180484), (12, 6817070), (13, 6292680), (15, 5453656), (20, 4090242), (24, 3408535), (26, 3146340), (30, 2726828), (39, 2097560), (40, 2045121), (41, 1995240), (52, 1573170), (60, 1363414), (65, 1258536), (78, 1048780), (82, 997620), (104, 786585), (120, 681707), (123, 665080), (130, 629268), (156, 524390), (164, 498810), (195, 419512), (205, 399048), (246, 332540), (260, 314634), (312, 262195), (328, 249405), (390, 209756), (410, 199524), (492, 166270), (520, 157317), (533, 153480), (615, 133016), (780, 104878), (820, 99762), (984, 83135), (1066, 76740), (1230, 66508), (1279, 63960), (1560, 52439), (1599, 51160), (1640, 49881), (2132, 38370), (2460, 33254), (2558, 31980), (2665, 30696), (3198, 25580), (3837, 21320), (4264, 19185), (4920, 16627), (5116, 15990), (5330, 15348), (6395, 12792), (6396, 12790), (7674, 10660), (7995, 10232)]