19939980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{173}}^1$

素因数の和:315

約数の個数: 96

約数和(自身を含む): 59984064

約数和(自身を除く): 40044084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 113, 170, 173, 204, 226, 255, 339, 340, 346, 452, 510, 519, 565, 678, 692, 865, 1020, 1038, 1130, 1356, 1695, 1730, 1921, 2076, 2260, 2595, 2941, 3390, 3460, 3842, 5190, 5763, 5882, 6780, 7684, 8823, 9605, 10380, 11526, 11764, 14705, 17646, 19210, 19549, 23052, 28815, 29410, 35292, 38420, 39098, 44115, 57630, 58647, 58820, 78196, 88230, 97745, 115260, 117294, 176460, 195490, 234588, 293235, 332333, 390980, 586470, 664666, 996999, 1172940, 1329332, 1661665, 1993998, 3323330, 3987996, 4984995, 6646660, 9969990, 19939980]

約数ペア:

[(1, 19939980), (2, 9969990), (3, 6646660), (4, 4984995), (5, 3987996), (6, 3323330), (10, 1993998), (12, 1661665), (15, 1329332), (17, 1172940), (20, 996999), (30, 664666), (34, 586470), (51, 390980), (60, 332333), (68, 293235), (85, 234588), (102, 195490), (113, 176460), (170, 117294), (173, 115260), (204, 97745), (226, 88230), (255, 78196), (339, 58820), (340, 58647), (346, 57630), (452, 44115), (510, 39098), (519, 38420), (565, 35292), (678, 29410), (692, 28815), (865, 23052), (1020, 19549), (1038, 19210), (1130, 17646), (1356, 14705), (1695, 11764), (1730, 11526), (1921, 10380), (2076, 9605), (2260, 8823), (2595, 7684), (2941, 6780), (3390, 5882), (3460, 5763), (3842, 5190)]