81864180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{863}}^1$

素因数の和:926

約数の個数: 144

約数和(自身を含む): 271724544

約数和(自身を除く): 189860364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 31, 34, 36, 45, 51, 60, 62, 68, 85, 90, 93, 102, 124, 153, 155, 170, 180, 186, 204, 255, 279, 306, 310, 340, 372, 465, 510, 527, 558, 612, 620, 765, 863, 930, 1020, 1054, 1116, 1395, 1530, 1581, 1726, 1860, 2108, 2589, 2635, 2790, 3060, 3162, 3452, 4315, 4743, 5178, 5270, 5580, 6324, 7767, 7905, 8630, 9486, 10356, 10540, 12945, 14671, 15534, 15810, 17260, 18972, 23715, 25890, 26753, 29342, 31068, 31620, 38835, 44013, 47430, 51780, 53506, 58684, 73355, 77670, 80259, 88026, 94860, 107012, 132039, 133765, 146710, 155340, 160518, 176052, 220065, 240777, 264078, 267530, 293420, 321036, 401295, 440130, 454801, 481554, 528156, 535060, 660195, 802590, 880260, 909602, 963108, 1203885, 1320390, 1364403, 1605180, 1819204, 2274005, 2407770, 2640780, 2728806, 4093209, 4548010, 4815540, 5457612, 6822015, 8186418, 9096020, 13644030, 16372836, 20466045, 27288060, 40932090, 81864180]

約数ペア:

[(1, 81864180), (2, 40932090), (3, 27288060), (4, 20466045), (5, 16372836), (6, 13644030), (9, 9096020), (10, 8186418), (12, 6822015), (15, 5457612), (17, 4815540), (18, 4548010), (20, 4093209), (30, 2728806), (31, 2640780), (34, 2407770), (36, 2274005), (45, 1819204), (51, 1605180), (60, 1364403), (62, 1320390), (68, 1203885), (85, 963108), (90, 909602), (93, 880260), (102, 802590), (124, 660195), (153, 535060), (155, 528156), (170, 481554), (180, 454801), (186, 440130), (204, 401295), (255, 321036), (279, 293420), (306, 267530), (310, 264078), (340, 240777), (372, 220065), (465, 176052), (510, 160518), (527, 155340), (558, 146710), (612, 133765), (620, 132039), (765, 107012), (863, 94860), (930, 88026), (1020, 80259), (1054, 77670), (1116, 73355), (1395, 58684), (1530, 53506), (1581, 51780), (1726, 47430), (1860, 44013), (2108, 38835), (2589, 31620), (2635, 31068), (2790, 29342), (3060, 26753), (3162, 25890), (3452, 23715), (4315, 18972), (4743, 17260), (5178, 15810), (5270, 15534), (5580, 14671), (6324, 12945), (7767, 10540), (7905, 10356), (8630, 9486)]