19688720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{467}}^1$

素因数の和:528

約数の個数: 80

約数和(自身を含む): 50139648

約数和(自身を除く): 30450928

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 124, 136, 155, 170, 248, 272, 310, 340, 467, 496, 527, 620, 680, 934, 1054, 1240, 1360, 1868, 2108, 2335, 2480, 2635, 3736, 4216, 4670, 5270, 7472, 7939, 8432, 9340, 10540, 14477, 15878, 18680, 21080, 28954, 31756, 37360, 39695, 42160, 57908, 63512, 72385, 79390, 115816, 127024, 144770, 158780, 231632, 246109, 289540, 317560, 492218, 579080, 635120, 984436, 1158160, 1230545, 1968872, 2461090, 3937744, 4922180, 9844360, 19688720]

約数ペア:

[(1, 19688720), (2, 9844360), (4, 4922180), (5, 3937744), (8, 2461090), (10, 1968872), (16, 1230545), (17, 1158160), (20, 984436), (31, 635120), (34, 579080), (40, 492218), (62, 317560), (68, 289540), (80, 246109), (85, 231632), (124, 158780), (136, 144770), (155, 127024), (170, 115816), (248, 79390), (272, 72385), (310, 63512), (340, 57908), (467, 42160), (496, 39695), (527, 37360), (620, 31756), (680, 28954), (934, 21080), (1054, 18680), (1240, 15878), (1360, 14477), (1868, 10540), (2108, 9340), (2335, 8432), (2480, 7939), (2635, 7472), (3736, 5270), (4216, 4670)]