19684980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{919}}^1$

素因数の和:958

約数の個数: 144

約数和(自身を含む): 72334080

約数和(自身を除く): 52649100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 51, 60, 63, 68, 70, 84, 85, 90, 102, 105, 119, 126, 140, 153, 170, 180, 204, 210, 238, 252, 255, 306, 315, 340, 357, 420, 476, 510, 595, 612, 630, 714, 765, 919, 1020, 1071, 1190, 1260, 1428, 1530, 1785, 1838, 2142, 2380, 2757, 3060, 3570, 3676, 4284, 4595, 5355, 5514, 6433, 7140, 8271, 9190, 10710, 11028, 12866, 13785, 15623, 16542, 18380, 19299, 21420, 25732, 27570, 31246, 32165, 33084, 38598, 41355, 46869, 55140, 57897, 62492, 64330, 77196, 78115, 82710, 93738, 96495, 109361, 115794, 128660, 140607, 156230, 165420, 187476, 192990, 218722, 231588, 234345, 281214, 289485, 312460, 328083, 385980, 437444, 468690, 546805, 562428, 578970, 656166, 703035, 937380, 984249, 1093610, 1157940, 1312332, 1406070, 1640415, 1968498, 2187220, 2812140, 3280830, 3936996, 4921245, 6561660, 9842490, 19684980]

約数ペア:

[(1, 19684980), (2, 9842490), (3, 6561660), (4, 4921245), (5, 3936996), (6, 3280830), (7, 2812140), (9, 2187220), (10, 1968498), (12, 1640415), (14, 1406070), (15, 1312332), (17, 1157940), (18, 1093610), (20, 984249), (21, 937380), (28, 703035), (30, 656166), (34, 578970), (35, 562428), (36, 546805), (42, 468690), (45, 437444), (51, 385980), (60, 328083), (63, 312460), (68, 289485), (70, 281214), (84, 234345), (85, 231588), (90, 218722), (102, 192990), (105, 187476), (119, 165420), (126, 156230), (140, 140607), (153, 128660), (170, 115794), (180, 109361), (204, 96495), (210, 93738), (238, 82710), (252, 78115), (255, 77196), (306, 64330), (315, 62492), (340, 57897), (357, 55140), (420, 46869), (476, 41355), (510, 38598), (595, 33084), (612, 32165), (630, 31246), (714, 27570), (765, 25732), (919, 21420), (1020, 19299), (1071, 18380), (1190, 16542), (1260, 15623), (1428, 13785), (1530, 12866), (1785, 11028), (1838, 10710), (2142, 9190), (2380, 8271), (2757, 7140), (3060, 6433), (3570, 5514), (3676, 5355), (4284, 4595)]