19776780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:336

約数の個数: 144

約数和(自身を含む): 66515904

約数和(自身を除く): 46739124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 30, 34, 36, 45, 46, 51, 60, 68, 69, 85, 90, 92, 102, 115, 138, 153, 170, 180, 204, 207, 230, 255, 276, 281, 306, 340, 345, 391, 414, 460, 510, 562, 612, 690, 765, 782, 828, 843, 1020, 1035, 1124, 1173, 1380, 1405, 1530, 1564, 1686, 1955, 2070, 2346, 2529, 2810, 3060, 3372, 3519, 3910, 4140, 4215, 4692, 4777, 5058, 5620, 5865, 6463, 7038, 7820, 8430, 9554, 10116, 11730, 12645, 12926, 14076, 14331, 16860, 17595, 19108, 19389, 23460, 23885, 25290, 25852, 28662, 32315, 35190, 38778, 42993, 47770, 50580, 57324, 58167, 64630, 70380, 71655, 77556, 85986, 95540, 96945, 109871, 116334, 129260, 143310, 171972, 193890, 214965, 219742, 232668, 286620, 290835, 329613, 387780, 429930, 439484, 549355, 581670, 659226, 859860, 988839, 1098710, 1163340, 1318452, 1648065, 1977678, 2197420, 3296130, 3955356, 4944195, 6592260, 9888390, 19776780]

約数ペア:

[(1, 19776780), (2, 9888390), (3, 6592260), (4, 4944195), (5, 3955356), (6, 3296130), (9, 2197420), (10, 1977678), (12, 1648065), (15, 1318452), (17, 1163340), (18, 1098710), (20, 988839), (23, 859860), (30, 659226), (34, 581670), (36, 549355), (45, 439484), (46, 429930), (51, 387780), (60, 329613), (68, 290835), (69, 286620), (85, 232668), (90, 219742), (92, 214965), (102, 193890), (115, 171972), (138, 143310), (153, 129260), (170, 116334), (180, 109871), (204, 96945), (207, 95540), (230, 85986), (255, 77556), (276, 71655), (281, 70380), (306, 64630), (340, 58167), (345, 57324), (391, 50580), (414, 47770), (460, 42993), (510, 38778), (562, 35190), (612, 32315), (690, 28662), (765, 25852), (782, 25290), (828, 23885), (843, 23460), (1020, 19389), (1035, 19108), (1124, 17595), (1173, 16860), (1380, 14331), (1405, 14076), (1530, 12926), (1564, 12645), (1686, 11730), (1955, 10116), (2070, 9554), (2346, 8430), (2529, 7820), (2810, 7038), (3060, 6463), (3372, 5865), (3519, 5620), (3910, 5058), (4140, 4777), (4215, 4692)]