18831920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:318

約数の個数: 80

約数和(自身を含む): 47327328

約数和(自身を除く): 28495408

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 61, 68, 80, 85, 122, 136, 170, 227, 244, 272, 305, 340, 454, 488, 610, 680, 908, 976, 1037, 1135, 1220, 1360, 1816, 2074, 2270, 2440, 3632, 3859, 4148, 4540, 4880, 5185, 7718, 8296, 9080, 10370, 13847, 15436, 16592, 18160, 19295, 20740, 27694, 30872, 38590, 41480, 55388, 61744, 69235, 77180, 82960, 110776, 138470, 154360, 221552, 235399, 276940, 308720, 470798, 553880, 941596, 1107760, 1176995, 1883192, 2353990, 3766384, 4707980, 9415960, 18831920]

約数ペア:

[(1, 18831920), (2, 9415960), (4, 4707980), (5, 3766384), (8, 2353990), (10, 1883192), (16, 1176995), (17, 1107760), (20, 941596), (34, 553880), (40, 470798), (61, 308720), (68, 276940), (80, 235399), (85, 221552), (122, 154360), (136, 138470), (170, 110776), (227, 82960), (244, 77180), (272, 69235), (305, 61744), (340, 55388), (454, 41480), (488, 38590), (610, 30872), (680, 27694), (908, 20740), (976, 19295), (1037, 18160), (1135, 16592), (1220, 15436), (1360, 13847), (1816, 10370), (2074, 9080), (2270, 8296), (2440, 7718), (3632, 5185), (3859, 4880), (4148, 4540)]