21034260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:218

約数の個数: 144

約数和(自身を含む): 70171920

約数和(自身を除く): 49137660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 89, 90, 101, 117, 130, 156, 178, 180, 195, 202, 234, 260, 267, 303, 356, 390, 404, 445, 468, 505, 534, 585, 606, 780, 801, 890, 909, 1010, 1068, 1157, 1170, 1212, 1313, 1335, 1515, 1602, 1780, 1818, 2020, 2314, 2340, 2626, 2670, 3030, 3204, 3471, 3636, 3939, 4005, 4545, 4628, 5252, 5340, 5785, 6060, 6565, 6942, 7878, 8010, 8989, 9090, 10413, 11570, 11817, 13130, 13884, 15756, 16020, 17355, 17978, 18180, 19695, 20826, 23140, 23634, 26260, 26967, 34710, 35956, 39390, 41652, 44945, 47268, 52065, 53934, 59085, 69420, 78780, 80901, 89890, 104130, 107868, 116857, 118170, 134835, 161802, 179780, 208260, 233714, 236340, 269670, 323604, 350571, 404505, 467428, 539340, 584285, 701142, 809010, 1051713, 1168570, 1402284, 1618020, 1752855, 2103426, 2337140, 3505710, 4206852, 5258565, 7011420, 10517130, 21034260]

約数ペア:

[(1, 21034260), (2, 10517130), (3, 7011420), (4, 5258565), (5, 4206852), (6, 3505710), (9, 2337140), (10, 2103426), (12, 1752855), (13, 1618020), (15, 1402284), (18, 1168570), (20, 1051713), (26, 809010), (30, 701142), (36, 584285), (39, 539340), (45, 467428), (52, 404505), (60, 350571), (65, 323604), (78, 269670), (89, 236340), (90, 233714), (101, 208260), (117, 179780), (130, 161802), (156, 134835), (178, 118170), (180, 116857), (195, 107868), (202, 104130), (234, 89890), (260, 80901), (267, 78780), (303, 69420), (356, 59085), (390, 53934), (404, 52065), (445, 47268), (468, 44945), (505, 41652), (534, 39390), (585, 35956), (606, 34710), (780, 26967), (801, 26260), (890, 23634), (909, 23140), (1010, 20826), (1068, 19695), (1157, 18180), (1170, 17978), (1212, 17355), (1313, 16020), (1335, 15756), (1515, 13884), (1602, 13130), (1780, 11817), (1818, 11570), (2020, 10413), (2314, 9090), (2340, 8989), (2626, 8010), (2670, 7878), (3030, 6942), (3204, 6565), (3471, 6060), (3636, 5785), (3939, 5340), (4005, 5252), (4545, 4628)]