20158240

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^2\times {\mathrm{349}}^1$

素因数の和:402

約数の個数: 72

約数和(自身を含む): 50406300

約数和(自身を除く): 30248060

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 349, 361, 380, 608, 698, 722, 760, 1396, 1444, 1520, 1745, 1805, 2792, 2888, 3040, 3490, 3610, 5584, 5776, 6631, 6980, 7220, 11168, 11552, 13262, 13960, 14440, 26524, 27920, 28880, 33155, 53048, 55840, 57760, 66310, 106096, 125989, 132620, 212192, 251978, 265240, 503956, 530480, 629945, 1007912, 1060960, 1259890, 2015824, 2519780, 4031648, 5039560, 10079120, 20158240]

約数ペア:

[(1, 20158240), (2, 10079120), (4, 5039560), (5, 4031648), (8, 2519780), (10, 2015824), (16, 1259890), (19, 1060960), (20, 1007912), (32, 629945), (38, 530480), (40, 503956), (76, 265240), (80, 251978), (95, 212192), (152, 132620), (160, 125989), (190, 106096), (304, 66310), (349, 57760), (361, 55840), (380, 53048), (608, 33155), (698, 28880), (722, 27920), (760, 26524), (1396, 14440), (1444, 13960), (1520, 13262), (1745, 11552), (1805, 11168), (2792, 7220), (2888, 6980), (3040, 6631), (3490, 5776), (3610, 5584)]