31020920

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:75

約数の個数: 160

約数和(自身を含む): 90752400

約数和(自身を除く): 59731480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 19, 20, 28, 34, 35, 38, 40, 49, 56, 68, 70, 76, 85, 95, 98, 119, 133, 136, 140, 152, 170, 190, 196, 238, 245, 266, 280, 323, 340, 343, 380, 392, 476, 490, 532, 595, 646, 665, 680, 686, 760, 833, 931, 952, 980, 1064, 1190, 1292, 1330, 1372, 1615, 1666, 1715, 1862, 1960, 2261, 2380, 2401, 2584, 2660, 2744, 3230, 3332, 3430, 3724, 4165, 4522, 4655, 4760, 4802, 5320, 5831, 6460, 6517, 6664, 6860, 7448, 8330, 9044, 9310, 9604, 11305, 11662, 12005, 12920, 13034, 13720, 15827, 16660, 18088, 18620, 19208, 22610, 23324, 24010, 26068, 29155, 31654, 32585, 33320, 37240, 40817, 45220, 45619, 46648, 48020, 52136, 58310, 63308, 65170, 79135, 81634, 90440, 91238, 96040, 110789, 116620, 126616, 130340, 158270, 163268, 182476, 204085, 221578, 228095, 233240, 260680, 316540, 326536, 364952, 408170, 443156, 456190, 553945, 633080, 775523, 816340, 886312, 912380, 1107890, 1551046, 1632680, 1824760, 2215780, 3102092, 3877615, 4431560, 6204184, 7755230, 15510460, 31020920]

約数ペア:

[(1, 31020920), (2, 15510460), (4, 7755230), (5, 6204184), (7, 4431560), (8, 3877615), (10, 3102092), (14, 2215780), (17, 1824760), (19, 1632680), (20, 1551046), (28, 1107890), (34, 912380), (35, 886312), (38, 816340), (40, 775523), (49, 633080), (56, 553945), (68, 456190), (70, 443156), (76, 408170), (85, 364952), (95, 326536), (98, 316540), (119, 260680), (133, 233240), (136, 228095), (140, 221578), (152, 204085), (170, 182476), (190, 163268), (196, 158270), (238, 130340), (245, 126616), (266, 116620), (280, 110789), (323, 96040), (340, 91238), (343, 90440), (380, 81634), (392, 79135), (476, 65170), (490, 63308), (532, 58310), (595, 52136), (646, 48020), (665, 46648), (680, 45619), (686, 45220), (760, 40817), (833, 37240), (931, 33320), (952, 32585), (980, 31654), (1064, 29155), (1190, 26068), (1292, 24010), (1330, 23324), (1372, 22610), (1615, 19208), (1666, 18620), (1715, 18088), (1862, 16660), (1960, 15827), (2261, 13720), (2380, 13034), (2401, 12920), (2584, 12005), (2660, 11662), (2744, 11305), (3230, 9604), (3332, 9310), (3430, 9044), (3724, 8330), (4165, 7448), (4522, 6860), (4655, 6664), (4760, 6517), (4802, 6460), (5320, 5831)]