19680040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 26975960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 59, 62, 118, 124, 155, 236, 248, 269, 295, 310, 472, 538, 590, 620, 1076, 1180, 1240, 1345, 1829, 2152, 2360, 2690, 3658, 5380, 7316, 8339, 9145, 10760, 14632, 15871, 16678, 18290, 31742, 33356, 36580, 41695, 63484, 66712, 73160, 79355, 83390, 126968, 158710, 166780, 317420, 333560, 492001, 634840, 984002, 1968004, 2460005, 3936008, 4920010, 9840020, 19680040]

約数ペア:

[(1, 19680040), (2, 9840020), (4, 4920010), (5, 3936008), (8, 2460005), (10, 1968004), (20, 984002), (31, 634840), (40, 492001), (59, 333560), (62, 317420), (118, 166780), (124, 158710), (155, 126968), (236, 83390), (248, 79355), (269, 73160), (295, 66712), (310, 63484), (472, 41695), (538, 36580), (590, 33356), (620, 31742), (1076, 18290), (1180, 16678), (1240, 15871), (1345, 14632), (1829, 10760), (2152, 9145), (2360, 8339), (2690, 7316), (3658, 5380)]