81530748

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:268

約数の個数: 144

約数和(自身を含む): 239410080

約数和(自身を除く): 157879332

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 53, 57, 76, 78, 106, 114, 117, 156, 159, 171, 173, 212, 228, 234, 247, 318, 342, 346, 468, 477, 494, 519, 636, 684, 689, 692, 741, 954, 988, 1007, 1038, 1378, 1482, 1557, 1908, 2014, 2067, 2076, 2223, 2249, 2756, 2964, 3021, 3114, 3287, 4028, 4134, 4446, 4498, 6042, 6201, 6228, 6574, 6747, 8268, 8892, 8996, 9063, 9169, 9861, 12084, 12402, 13091, 13148, 13494, 18126, 18338, 19722, 20241, 24804, 26182, 26988, 27507, 29583, 36252, 36676, 39273, 39444, 40482, 42731, 52364, 55014, 59166, 78546, 80964, 82521, 85462, 110028, 117819, 118332, 119197, 128193, 157092, 165042, 170924, 174211, 235638, 238394, 256386, 330084, 348422, 357591, 384579, 471276, 476788, 512772, 522633, 696844, 715182, 769158, 1045266, 1072773, 1430364, 1538316, 1567899, 2090532, 2145546, 2264743, 3135798, 4291092, 4529486, 6271596, 6794229, 9058972, 13588458, 20382687, 27176916, 40765374, 81530748]

約数ペア:

[(1, 81530748), (2, 40765374), (3, 27176916), (4, 20382687), (6, 13588458), (9, 9058972), (12, 6794229), (13, 6271596), (18, 4529486), (19, 4291092), (26, 3135798), (36, 2264743), (38, 2145546), (39, 2090532), (52, 1567899), (53, 1538316), (57, 1430364), (76, 1072773), (78, 1045266), (106, 769158), (114, 715182), (117, 696844), (156, 522633), (159, 512772), (171, 476788), (173, 471276), (212, 384579), (228, 357591), (234, 348422), (247, 330084), (318, 256386), (342, 238394), (346, 235638), (468, 174211), (477, 170924), (494, 165042), (519, 157092), (636, 128193), (684, 119197), (689, 118332), (692, 117819), (741, 110028), (954, 85462), (988, 82521), (1007, 80964), (1038, 78546), (1378, 59166), (1482, 55014), (1557, 52364), (1908, 42731), (2014, 40482), (2067, 39444), (2076, 39273), (2223, 36676), (2249, 36252), (2756, 29583), (2964, 27507), (3021, 26988), (3114, 26182), (3287, 24804), (4028, 20241), (4134, 19722), (4446, 18338), (4498, 18126), (6042, 13494), (6201, 13148), (6228, 13091), (6574, 12402), (6747, 12084), (8268, 9861), (8892, 9169), (8996, 9063)]