19430920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:758

約数の個数: 64

約数和(自身を含む): 47332800

約数和(自身を除く): 27901880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 152, 185, 190, 296, 370, 380, 691, 703, 740, 760, 1382, 1406, 1480, 2764, 2812, 3455, 3515, 5528, 5624, 6910, 7030, 13129, 13820, 14060, 25567, 26258, 27640, 28120, 51134, 52516, 65645, 102268, 105032, 127835, 131290, 204536, 255670, 262580, 485773, 511340, 525160, 971546, 1022680, 1943092, 2428865, 3886184, 4857730, 9715460, 19430920]

約数ペア:

[(1, 19430920), (2, 9715460), (4, 4857730), (5, 3886184), (8, 2428865), (10, 1943092), (19, 1022680), (20, 971546), (37, 525160), (38, 511340), (40, 485773), (74, 262580), (76, 255670), (95, 204536), (148, 131290), (152, 127835), (185, 105032), (190, 102268), (296, 65645), (370, 52516), (380, 51134), (691, 28120), (703, 27640), (740, 26258), (760, 25567), (1382, 14060), (1406, 13820), (1480, 13129), (2764, 7030), (2812, 6910), (3455, 5624), (3515, 5528)]