1978020

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1$

素因数の和:72

約数の個数: 144

約数和(自身を含む): 6971328

約数和(自身を除く): 4993308

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 37, 44, 45, 54, 55, 60, 66, 74, 81, 90, 99, 108, 110, 111, 132, 135, 148, 162, 165, 180, 185, 198, 220, 222, 243, 270, 297, 324, 330, 333, 370, 396, 405, 407, 444, 486, 495, 540, 555, 594, 660, 666, 740, 810, 814, 891, 972, 990, 999, 1110, 1188, 1215, 1221, 1332, 1485, 1620, 1628, 1665, 1782, 1980, 1998, 2035, 2220, 2430, 2442, 2673, 2970, 2997, 3330, 3564, 3663, 3996, 4070, 4455, 4860, 4884, 4995, 5346, 5940, 5994, 6105, 6660, 7326, 8140, 8910, 8991, 9990, 10692, 10989, 11988, 12210, 13365, 14652, 14985, 17820, 17982, 18315, 19980, 21978, 24420, 26730, 29970, 32967, 35964, 36630, 43956, 44955, 53460, 54945, 59940, 65934, 73260, 89910, 98901, 109890, 131868, 164835, 179820, 197802, 219780, 329670, 395604, 494505, 659340, 989010, 1978020]

約数ペア:

[(1, 1978020), (2, 989010), (3, 659340), (4, 494505), (5, 395604), (6, 329670), (9, 219780), (10, 197802), (11, 179820), (12, 164835), (15, 131868), (18, 109890), (20, 98901), (22, 89910), (27, 73260), (30, 65934), (33, 59940), (36, 54945), (37, 53460), (44, 44955), (45, 43956), (54, 36630), (55, 35964), (60, 32967), (66, 29970), (74, 26730), (81, 24420), (90, 21978), (99, 19980), (108, 18315), (110, 17982), (111, 17820), (132, 14985), (135, 14652), (148, 13365), (162, 12210), (165, 11988), (180, 10989), (185, 10692), (198, 9990), (220, 8991), (222, 8910), (243, 8140), (270, 7326), (297, 6660), (324, 6105), (330, 5994), (333, 5940), (370, 5346), (396, 4995), (405, 4884), (407, 4860), (444, 4455), (486, 4070), (495, 3996), (540, 3663), (555, 3564), (594, 3330), (660, 2997), (666, 2970), (740, 2673), (810, 2442), (814, 2430), (891, 2220), (972, 2035), (990, 1998), (999, 1980), (1110, 1782), (1188, 1665), (1215, 1628), (1221, 1620), (1332, 1485)]