19947120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{4889}}^1$

素因数の和:4922

約数の個数: 80

約数和(自身を含む): 65486880

約数和(自身を除く): 45539760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 4889, 9778, 14667, 19556, 24445, 29334, 39112, 48890, 58668, 73335, 78224, 83113, 97780, 117336, 146670, 166226, 195560, 234672, 249339, 293340, 332452, 391120, 415565, 498678, 586680, 664904, 831130, 997356, 1173360, 1246695, 1329808, 1662260, 1994712, 2493390, 3324520, 3989424, 4986780, 6649040, 9973560, 19947120]

約数ペア:

[(1, 19947120), (2, 9973560), (3, 6649040), (4, 4986780), (5, 3989424), (6, 3324520), (8, 2493390), (10, 1994712), (12, 1662260), (15, 1329808), (16, 1246695), (17, 1173360), (20, 997356), (24, 831130), (30, 664904), (34, 586680), (40, 498678), (48, 415565), (51, 391120), (60, 332452), (68, 293340), (80, 249339), (85, 234672), (102, 195560), (120, 166226), (136, 146670), (170, 117336), (204, 97780), (240, 83113), (255, 78224), (272, 73335), (340, 58668), (408, 48890), (510, 39112), (680, 29334), (816, 24445), (1020, 19556), (1360, 14667), (2040, 9778), (4080, 4889)]