21156840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3457}}^1$

素因数の和:3491

約数の個数: 96

約数和(自身を含む): 72825480

約数和(自身を除く): 51668640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 153, 170, 180, 204, 255, 306, 340, 360, 408, 510, 612, 680, 765, 1020, 1224, 1530, 2040, 3060, 3457, 6120, 6914, 10371, 13828, 17285, 20742, 27656, 31113, 34570, 41484, 51855, 58769, 62226, 69140, 82968, 103710, 117538, 124452, 138280, 155565, 176307, 207420, 235076, 248904, 293845, 311130, 352614, 414840, 470152, 528921, 587690, 622260, 705228, 881535, 1057842, 1175380, 1244520, 1410456, 1763070, 2115684, 2350760, 2644605, 3526140, 4231368, 5289210, 7052280, 10578420, 21156840]

約数ペア:

[(1, 21156840), (2, 10578420), (3, 7052280), (4, 5289210), (5, 4231368), (6, 3526140), (8, 2644605), (9, 2350760), (10, 2115684), (12, 1763070), (15, 1410456), (17, 1244520), (18, 1175380), (20, 1057842), (24, 881535), (30, 705228), (34, 622260), (36, 587690), (40, 528921), (45, 470152), (51, 414840), (60, 352614), (68, 311130), (72, 293845), (85, 248904), (90, 235076), (102, 207420), (120, 176307), (136, 155565), (153, 138280), (170, 124452), (180, 117538), (204, 103710), (255, 82968), (306, 69140), (340, 62226), (360, 58769), (408, 51855), (510, 41484), (612, 34570), (680, 31113), (765, 27656), (1020, 20742), (1224, 17285), (1530, 13828), (2040, 10371), (3060, 6914), (3457, 6120)]