15638840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:205

約数の個数: 96

約数和(自身を含む): 41860800

約数和(自身を除く): 26221960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 79, 98, 101, 140, 158, 196, 202, 245, 280, 316, 392, 395, 404, 490, 505, 553, 632, 707, 790, 808, 980, 1010, 1106, 1414, 1580, 1960, 2020, 2212, 2765, 2828, 3160, 3535, 3871, 4040, 4424, 4949, 5530, 5656, 7070, 7742, 7979, 9898, 11060, 14140, 15484, 15958, 19355, 19796, 22120, 24745, 28280, 30968, 31916, 38710, 39592, 39895, 49490, 55853, 63832, 77420, 79790, 98980, 111706, 154840, 159580, 197960, 223412, 279265, 319160, 390971, 446824, 558530, 781942, 1117060, 1563884, 1954855, 2234120, 3127768, 3909710, 7819420, 15638840]

約数ペア:

[(1, 15638840), (2, 7819420), (4, 3909710), (5, 3127768), (7, 2234120), (8, 1954855), (10, 1563884), (14, 1117060), (20, 781942), (28, 558530), (35, 446824), (40, 390971), (49, 319160), (56, 279265), (70, 223412), (79, 197960), (98, 159580), (101, 154840), (140, 111706), (158, 98980), (196, 79790), (202, 77420), (245, 63832), (280, 55853), (316, 49490), (392, 39895), (395, 39592), (404, 38710), (490, 31916), (505, 30968), (553, 28280), (632, 24745), (707, 22120), (790, 19796), (808, 19355), (980, 15958), (1010, 15484), (1106, 14140), (1414, 11060), (1580, 9898), (1960, 7979), (2020, 7742), (2212, 7070), (2765, 5656), (2828, 5530), (3160, 4949), (3535, 4424), (3871, 4040)]