19515280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:416

約数の個数: 80

約数和(自身を含む): 49193280

約数和(自身を除く): 29678000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 37, 38, 40, 74, 76, 80, 95, 148, 152, 185, 190, 296, 304, 347, 370, 380, 592, 694, 703, 740, 760, 1388, 1406, 1480, 1520, 1735, 2776, 2812, 2960, 3470, 3515, 5552, 5624, 6593, 6940, 7030, 11248, 12839, 13186, 13880, 14060, 25678, 26372, 27760, 28120, 32965, 51356, 52744, 56240, 64195, 65930, 102712, 105488, 128390, 131860, 205424, 243941, 256780, 263720, 487882, 513560, 527440, 975764, 1027120, 1219705, 1951528, 2439410, 3903056, 4878820, 9757640, 19515280]

約数ペア:

[(1, 19515280), (2, 9757640), (4, 4878820), (5, 3903056), (8, 2439410), (10, 1951528), (16, 1219705), (19, 1027120), (20, 975764), (37, 527440), (38, 513560), (40, 487882), (74, 263720), (76, 256780), (80, 243941), (95, 205424), (148, 131860), (152, 128390), (185, 105488), (190, 102712), (296, 65930), (304, 64195), (347, 56240), (370, 52744), (380, 51356), (592, 32965), (694, 28120), (703, 27760), (740, 26372), (760, 25678), (1388, 14060), (1406, 13880), (1480, 13186), (1520, 12839), (1735, 11248), (2776, 7030), (2812, 6940), (2960, 6593), (3470, 5624), (3515, 5552)]