20151720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:464

約数の個数: 128

約数和(自身を含む): 68774400

約数和(自身を除く): 48622680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 47, 54, 60, 72, 90, 94, 108, 120, 135, 141, 180, 188, 216, 235, 270, 282, 360, 376, 397, 423, 470, 540, 564, 705, 794, 846, 940, 1080, 1128, 1191, 1269, 1410, 1588, 1692, 1880, 1985, 2115, 2382, 2538, 2820, 3176, 3384, 3573, 3970, 4230, 4764, 5076, 5640, 5955, 6345, 7146, 7940, 8460, 9528, 10152, 10719, 11910, 12690, 14292, 15880, 16920, 17865, 18659, 21438, 23820, 25380, 28584, 35730, 37318, 42876, 47640, 50760, 53595, 55977, 71460, 74636, 85752, 93295, 107190, 111954, 142920, 149272, 167931, 186590, 214380, 223908, 279885, 335862, 373180, 428760, 447816, 503793, 559770, 671724, 746360, 839655, 1007586, 1119540, 1343448, 1679310, 2015172, 2239080, 2518965, 3358620, 4030344, 5037930, 6717240, 10075860, 20151720]

約数ペア:

[(1, 20151720), (2, 10075860), (3, 6717240), (4, 5037930), (5, 4030344), (6, 3358620), (8, 2518965), (9, 2239080), (10, 2015172), (12, 1679310), (15, 1343448), (18, 1119540), (20, 1007586), (24, 839655), (27, 746360), (30, 671724), (36, 559770), (40, 503793), (45, 447816), (47, 428760), (54, 373180), (60, 335862), (72, 279885), (90, 223908), (94, 214380), (108, 186590), (120, 167931), (135, 149272), (141, 142920), (180, 111954), (188, 107190), (216, 93295), (235, 85752), (270, 74636), (282, 71460), (360, 55977), (376, 53595), (397, 50760), (423, 47640), (470, 42876), (540, 37318), (564, 35730), (705, 28584), (794, 25380), (846, 23820), (940, 21438), (1080, 18659), (1128, 17865), (1191, 16920), (1269, 15880), (1410, 14292), (1588, 12690), (1692, 11910), (1880, 10719), (1985, 10152), (2115, 9528), (2382, 8460), (2538, 7940), (2820, 7146), (3176, 6345), (3384, 5955), (3573, 5640), (3970, 5076), (4230, 4764)]