221243520

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{829}}^1$

素因数の和:990

約数の個数: 128

約数和(自身を含む): 711144000

約数和(自身を除く): 489900480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 139, 160, 192, 240, 278, 320, 384, 417, 480, 556, 640, 695, 829, 834, 960, 1112, 1390, 1658, 1668, 1920, 2085, 2224, 2487, 2780, 3316, 3336, 4145, 4170, 4448, 4974, 5560, 6632, 6672, 8290, 8340, 8896, 9948, 11120, 12435, 13264, 13344, 16580, 16680, 17792, 19896, 22240, 24870, 26528, 26688, 33160, 33360, 39792, 44480, 49740, 53056, 53376, 66320, 66720, 79584, 88960, 99480, 106112, 115231, 132640, 133440, 159168, 198960, 230462, 265280, 266880, 318336, 345693, 397920, 460924, 530560, 576155, 691386, 795840, 921848, 1152310, 1382772, 1591680, 1728465, 1843696, 2304620, 2765544, 3456930, 3687392, 4609240, 5531088, 6913860, 7374784, 9218480, 11062176, 13827720, 14749568, 18436960, 22124352, 27655440, 36873920, 44248704, 55310880, 73747840, 110621760, 221243520]

約数ペア:

[(1, 221243520), (2, 110621760), (3, 73747840), (4, 55310880), (5, 44248704), (6, 36873920), (8, 27655440), (10, 22124352), (12, 18436960), (15, 14749568), (16, 13827720), (20, 11062176), (24, 9218480), (30, 7374784), (32, 6913860), (40, 5531088), (48, 4609240), (60, 3687392), (64, 3456930), (80, 2765544), (96, 2304620), (120, 1843696), (128, 1728465), (139, 1591680), (160, 1382772), (192, 1152310), (240, 921848), (278, 795840), (320, 691386), (384, 576155), (417, 530560), (480, 460924), (556, 397920), (640, 345693), (695, 318336), (829, 266880), (834, 265280), (960, 230462), (1112, 198960), (1390, 159168), (1658, 133440), (1668, 132640), (1920, 115231), (2085, 106112), (2224, 99480), (2487, 88960), (2780, 79584), (3316, 66720), (3336, 66320), (4145, 53376), (4170, 53056), (4448, 49740), (4974, 44480), (5560, 39792), (6632, 33360), (6672, 33160), (8290, 26688), (8340, 26528), (8896, 24870), (9948, 22240), (11120, 19896), (12435, 17792), (13264, 16680), (13344, 16580)]