407991640

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{131}}^1\times {\mathrm{227}}^1$

素因数の和:390

約数の個数: 128

約数和(自身を含む): 1083456000

約数和(自身を除く): 675464360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 131, 140, 196, 227, 245, 262, 280, 343, 392, 454, 490, 524, 655, 686, 908, 917, 980, 1048, 1135, 1310, 1372, 1589, 1715, 1816, 1834, 1960, 2270, 2620, 2744, 3178, 3430, 3668, 4540, 4585, 5240, 6356, 6419, 6860, 7336, 7945, 9080, 9170, 11123, 12712, 12838, 13720, 15890, 18340, 22246, 25676, 29737, 31780, 32095, 36680, 44492, 44933, 51352, 55615, 59474, 63560, 64190, 77861, 88984, 89866, 111230, 118948, 128380, 148685, 155722, 179732, 208159, 222460, 224665, 237896, 256760, 297370, 311444, 359464, 389305, 416318, 444920, 449330, 594740, 622888, 778610, 832636, 898660, 1040795, 1189480, 1457113, 1557220, 1665272, 1797320, 2081590, 2914226, 3114440, 4163180, 5828452, 7285565, 8326360, 10199791, 11656904, 14571130, 20399582, 29142260, 40799164, 50998955, 58284520, 81598328, 101997910, 203995820, 407991640]

約数ペア:

[(1, 407991640), (2, 203995820), (4, 101997910), (5, 81598328), (7, 58284520), (8, 50998955), (10, 40799164), (14, 29142260), (20, 20399582), (28, 14571130), (35, 11656904), (40, 10199791), (49, 8326360), (56, 7285565), (70, 5828452), (98, 4163180), (131, 3114440), (140, 2914226), (196, 2081590), (227, 1797320), (245, 1665272), (262, 1557220), (280, 1457113), (343, 1189480), (392, 1040795), (454, 898660), (490, 832636), (524, 778610), (655, 622888), (686, 594740), (908, 449330), (917, 444920), (980, 416318), (1048, 389305), (1135, 359464), (1310, 311444), (1372, 297370), (1589, 256760), (1715, 237896), (1816, 224665), (1834, 222460), (1960, 208159), (2270, 179732), (2620, 155722), (2744, 148685), (3178, 128380), (3430, 118948), (3668, 111230), (4540, 89866), (4585, 88984), (5240, 77861), (6356, 64190), (6419, 63560), (6860, 59474), (7336, 55615), (7945, 51352), (9080, 44933), (9170, 44492), (11123, 36680), (12712, 32095), (12838, 31780), (13720, 29737), (15890, 25676), (18340, 22246)]