131781420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:520

約数の個数: 144

約数和(自身を含む): 420271488

約数和(自身を除く): 288490068

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 47, 60, 74, 90, 94, 111, 141, 148, 180, 185, 188, 222, 235, 282, 333, 370, 421, 423, 444, 470, 555, 564, 666, 705, 740, 842, 846, 940, 1110, 1263, 1332, 1410, 1665, 1684, 1692, 1739, 2105, 2115, 2220, 2526, 2820, 3330, 3478, 3789, 4210, 4230, 5052, 5217, 6315, 6660, 6956, 7578, 8420, 8460, 8695, 10434, 12630, 15156, 15577, 15651, 17390, 18945, 19787, 20868, 25260, 26085, 31154, 31302, 34780, 37890, 39574, 46731, 52170, 59361, 62308, 62604, 75780, 77885, 78255, 79148, 93462, 98935, 104340, 118722, 140193, 155770, 156510, 178083, 186924, 197870, 233655, 237444, 280386, 296805, 311540, 313020, 356166, 395740, 467310, 560772, 593610, 700965, 712332, 732119, 890415, 934620, 1187220, 1401930, 1464238, 1780830, 2196357, 2803860, 2928476, 3561660, 3660595, 4392714, 6589071, 7321190, 8785428, 10981785, 13178142, 14642380, 21963570, 26356284, 32945355, 43927140, 65890710, 131781420]

約数ペア:

[(1, 131781420), (2, 65890710), (3, 43927140), (4, 32945355), (5, 26356284), (6, 21963570), (9, 14642380), (10, 13178142), (12, 10981785), (15, 8785428), (18, 7321190), (20, 6589071), (30, 4392714), (36, 3660595), (37, 3561660), (45, 2928476), (47, 2803860), (60, 2196357), (74, 1780830), (90, 1464238), (94, 1401930), (111, 1187220), (141, 934620), (148, 890415), (180, 732119), (185, 712332), (188, 700965), (222, 593610), (235, 560772), (282, 467310), (333, 395740), (370, 356166), (421, 313020), (423, 311540), (444, 296805), (470, 280386), (555, 237444), (564, 233655), (666, 197870), (705, 186924), (740, 178083), (842, 156510), (846, 155770), (940, 140193), (1110, 118722), (1263, 104340), (1332, 98935), (1410, 93462), (1665, 79148), (1684, 78255), (1692, 77885), (1739, 75780), (2105, 62604), (2115, 62308), (2220, 59361), (2526, 52170), (2820, 46731), (3330, 39574), (3478, 37890), (3789, 34780), (4210, 31302), (4230, 31154), (5052, 26085), (5217, 25260), (6315, 20868), (6660, 19787), (6956, 18945), (7578, 17390), (8420, 15651), (8460, 15577), (8695, 15156), (10434, 12630)]