19919104

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 44150400

約数和(自身を除く): 24231296

約数列:

[1, 2, 4, 8, 16, 17, 23, 32, 34, 46, 64, 68, 92, 128, 136, 184, 199, 256, 272, 368, 391, 398, 544, 736, 782, 796, 1088, 1472, 1564, 1592, 2176, 2944, 3128, 3184, 3383, 4352, 4577, 5888, 6256, 6368, 6766, 9154, 12512, 12736, 13532, 18308, 25024, 25472, 27064, 36616, 50048, 50944, 54128, 73232, 77809, 100096, 108256, 146464, 155618, 216512, 292928, 311236, 433024, 585856, 622472, 866048, 1171712, 1244944, 2489888, 4979776, 9959552, 19919104]

約数ペア:

[(1, 19919104), (2, 9959552), (4, 4979776), (8, 2489888), (16, 1244944), (17, 1171712), (23, 866048), (32, 622472), (34, 585856), (46, 433024), (64, 311236), (68, 292928), (92, 216512), (128, 155618), (136, 146464), (184, 108256), (199, 100096), (256, 77809), (272, 73232), (368, 54128), (391, 50944), (398, 50048), (544, 36616), (736, 27064), (782, 25472), (796, 25024), (1088, 18308), (1472, 13532), (1564, 12736), (1592, 12512), (2176, 9154), (2944, 6766), (3128, 6368), (3184, 6256), (3383, 5888), (4352, 4577)]