15921520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:562

約数の個数: 80

約数和(自身を含む): 40979520

約数和(自身を除く): 25058000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 509, 680, 782, 920, 1018, 1360, 1564, 1840, 1955, 2036, 2545, 3128, 3910, 4072, 5090, 6256, 7820, 8144, 8653, 10180, 11707, 15640, 17306, 20360, 23414, 31280, 34612, 40720, 43265, 46828, 58535, 69224, 86530, 93656, 117070, 138448, 173060, 187312, 199019, 234140, 346120, 398038, 468280, 692240, 796076, 936560, 995095, 1592152, 1990190, 3184304, 3980380, 7960760, 15921520]

約数ペア:

[(1, 15921520), (2, 7960760), (4, 3980380), (5, 3184304), (8, 1990190), (10, 1592152), (16, 995095), (17, 936560), (20, 796076), (23, 692240), (34, 468280), (40, 398038), (46, 346120), (68, 234140), (80, 199019), (85, 187312), (92, 173060), (115, 138448), (136, 117070), (170, 93656), (184, 86530), (230, 69224), (272, 58535), (340, 46828), (368, 43265), (391, 40720), (460, 34612), (509, 31280), (680, 23414), (782, 20360), (920, 17306), (1018, 15640), (1360, 11707), (1564, 10180), (1840, 8653), (1955, 8144), (2036, 7820), (2545, 6256), (3128, 5090), (3910, 4072)]