18727980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:407

約数の個数: 96

約数和(自身を含む): 56222208

約数和(自身を除く): 37494228

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 41, 46, 60, 69, 82, 92, 115, 123, 138, 164, 205, 230, 246, 276, 331, 345, 410, 460, 492, 615, 662, 690, 820, 943, 993, 1230, 1324, 1380, 1655, 1886, 1986, 2460, 2829, 3310, 3772, 3972, 4715, 4965, 5658, 6620, 7613, 9430, 9930, 11316, 13571, 14145, 15226, 18860, 19860, 22839, 27142, 28290, 30452, 38065, 40713, 45678, 54284, 56580, 67855, 76130, 81426, 91356, 114195, 135710, 152260, 162852, 203565, 228390, 271420, 312133, 407130, 456780, 624266, 814260, 936399, 1248532, 1560665, 1872798, 3121330, 3745596, 4681995, 6242660, 9363990, 18727980]

約数ペア:

[(1, 18727980), (2, 9363990), (3, 6242660), (4, 4681995), (5, 3745596), (6, 3121330), (10, 1872798), (12, 1560665), (15, 1248532), (20, 936399), (23, 814260), (30, 624266), (41, 456780), (46, 407130), (60, 312133), (69, 271420), (82, 228390), (92, 203565), (115, 162852), (123, 152260), (138, 135710), (164, 114195), (205, 91356), (230, 81426), (246, 76130), (276, 67855), (331, 56580), (345, 54284), (410, 45678), (460, 40713), (492, 38065), (615, 30452), (662, 28290), (690, 27142), (820, 22839), (943, 19860), (993, 18860), (1230, 15226), (1324, 14145), (1380, 13571), (1655, 11316), (1886, 9930), (1986, 9430), (2460, 7613), (2829, 6620), (3310, 5658), (3772, 4965), (3972, 4715)]