20149105840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{644153}}^1$

素因数の和:644206

約数の個数: 80

約数和(自身を含む): 51759062208

約数和(自身を除く): 31609956368

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, 680, 782, 920, 1360, 1564, 1840, 1955, 3128, 3910, 6256, 7820, 15640, 31280, 644153, 1288306, 2576612, 3220765, 5153224, 6441530, 10306448, 10950601, 12883060, 14815519, 21901202, 25766120, 29631038, 43802404, 51532240, 54753005, 59262076, 74077595, 87604808, 109506010, 118524152, 148155190, 175209616, 219012020, 237048304, 251863823, 296310380, 438024040, 503727646, 592620760, 876048080, 1007455292, 1185241520, 1259319115, 2014910584, 2518638230, 4029821168, 5037276460, 10074552920, 20149105840]

約数ペア:

[(1, 20149105840), (2, 10074552920), (4, 5037276460), (5, 4029821168), (8, 2518638230), (10, 2014910584), (16, 1259319115), (17, 1185241520), (20, 1007455292), (23, 876048080), (34, 592620760), (40, 503727646), (46, 438024040), (68, 296310380), (80, 251863823), (85, 237048304), (92, 219012020), (115, 175209616), (136, 148155190), (170, 118524152), (184, 109506010), (230, 87604808), (272, 74077595), (340, 59262076), (368, 54753005), (391, 51532240), (460, 43802404), (680, 29631038), (782, 25766120), (920, 21901202), (1360, 14815519), (1564, 12883060), (1840, 10950601), (1955, 10306448), (3128, 6441530), (3910, 5153224), (6256, 3220765), (7820, 2576612), (15640, 1288306), (31280, 644153)]