19971888

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:450

約数の個数: 80

約数和(自身を含む): 55353600

約数和(自身を除く): 35381712

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 38, 48, 57, 61, 76, 114, 122, 152, 183, 228, 244, 304, 359, 366, 456, 488, 718, 732, 912, 976, 1077, 1159, 1436, 1464, 2154, 2318, 2872, 2928, 3477, 4308, 4636, 5744, 6821, 6954, 8616, 9272, 13642, 13908, 17232, 18544, 20463, 21899, 27284, 27816, 40926, 43798, 54568, 55632, 65697, 81852, 87596, 109136, 131394, 163704, 175192, 262788, 327408, 350384, 416081, 525576, 832162, 1051152, 1248243, 1664324, 2496486, 3328648, 4992972, 6657296, 9985944, 19971888]

約数ペア:

[(1, 19971888), (2, 9985944), (3, 6657296), (4, 4992972), (6, 3328648), (8, 2496486), (12, 1664324), (16, 1248243), (19, 1051152), (24, 832162), (38, 525576), (48, 416081), (57, 350384), (61, 327408), (76, 262788), (114, 175192), (122, 163704), (152, 131394), (183, 109136), (228, 87596), (244, 81852), (304, 65697), (359, 55632), (366, 54568), (456, 43798), (488, 40926), (718, 27816), (732, 27284), (912, 21899), (976, 20463), (1077, 18544), (1159, 17232), (1436, 13908), (1464, 13642), (2154, 9272), (2318, 8616), (2872, 6954), (2928, 6821), (3477, 5744), (4308, 4636)]