20865120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2557}}^1$

素因数の和:2592

約数の個数: 96

約数和(自身を含む): 69618528

約数和(自身を除く): 48753408

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 68, 80, 85, 96, 102, 120, 136, 160, 170, 204, 240, 255, 272, 340, 408, 480, 510, 544, 680, 816, 1020, 1360, 1632, 2040, 2557, 2720, 4080, 5114, 7671, 8160, 10228, 12785, 15342, 20456, 25570, 30684, 38355, 40912, 43469, 51140, 61368, 76710, 81824, 86938, 102280, 122736, 130407, 153420, 173876, 204560, 217345, 245472, 260814, 306840, 347752, 409120, 434690, 521628, 613680, 652035, 695504, 869380, 1043256, 1227360, 1304070, 1391008, 1738760, 2086512, 2608140, 3477520, 4173024, 5216280, 6955040, 10432560, 20865120]

約数ペア:

[(1, 20865120), (2, 10432560), (3, 6955040), (4, 5216280), (5, 4173024), (6, 3477520), (8, 2608140), (10, 2086512), (12, 1738760), (15, 1391008), (16, 1304070), (17, 1227360), (20, 1043256), (24, 869380), (30, 695504), (32, 652035), (34, 613680), (40, 521628), (48, 434690), (51, 409120), (60, 347752), (68, 306840), (80, 260814), (85, 245472), (96, 217345), (102, 204560), (120, 173876), (136, 153420), (160, 130407), (170, 122736), (204, 102280), (240, 86938), (255, 81824), (272, 76710), (340, 61368), (408, 51140), (480, 43469), (510, 40912), (544, 38355), (680, 30684), (816, 25570), (1020, 20456), (1360, 15342), (1632, 12785), (2040, 10228), (2557, 8160), (2720, 7671), (4080, 5114)]