21880950

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{229}}^1$

素因数の和:271

約数の個数: 144

約数和(自身を含む): 68276880

約数和(自身を除く): 46395930

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 25, 26, 30, 35, 39, 42, 49, 50, 65, 70, 75, 78, 91, 98, 105, 130, 147, 150, 175, 182, 195, 210, 229, 245, 273, 294, 325, 350, 390, 455, 458, 490, 525, 546, 637, 650, 687, 735, 910, 975, 1050, 1145, 1225, 1274, 1365, 1374, 1470, 1603, 1911, 1950, 2275, 2290, 2450, 2730, 2977, 3185, 3206, 3435, 3675, 3822, 4550, 4809, 5725, 5954, 6370, 6825, 6870, 7350, 8015, 8931, 9555, 9618, 11221, 11450, 13650, 14885, 15925, 16030, 17175, 17862, 19110, 20839, 22442, 24045, 29770, 31850, 33663, 34350, 40075, 41678, 44655, 47775, 48090, 56105, 62517, 67326, 74425, 80150, 89310, 95550, 104195, 112210, 120225, 125034, 145873, 148850, 168315, 208390, 223275, 240450, 280525, 291746, 312585, 336630, 437619, 446550, 520975, 561050, 625170, 729365, 841575, 875238, 1041950, 1458730, 1562925, 1683150, 2188095, 3125850, 3646825, 4376190, 7293650, 10940475, 21880950]

約数ペア:

[(1, 21880950), (2, 10940475), (3, 7293650), (5, 4376190), (6, 3646825), (7, 3125850), (10, 2188095), (13, 1683150), (14, 1562925), (15, 1458730), (21, 1041950), (25, 875238), (26, 841575), (30, 729365), (35, 625170), (39, 561050), (42, 520975), (49, 446550), (50, 437619), (65, 336630), (70, 312585), (75, 291746), (78, 280525), (91, 240450), (98, 223275), (105, 208390), (130, 168315), (147, 148850), (150, 145873), (175, 125034), (182, 120225), (195, 112210), (210, 104195), (229, 95550), (245, 89310), (273, 80150), (294, 74425), (325, 67326), (350, 62517), (390, 56105), (455, 48090), (458, 47775), (490, 44655), (525, 41678), (546, 40075), (637, 34350), (650, 33663), (687, 31850), (735, 29770), (910, 24045), (975, 22442), (1050, 20839), (1145, 19110), (1225, 17862), (1274, 17175), (1365, 16030), (1374, 15925), (1470, 14885), (1603, 13650), (1911, 11450), (1950, 11221), (2275, 9618), (2290, 9555), (2450, 8931), (2730, 8015), (2977, 7350), (3185, 6870), (3206, 6825), (3435, 6370), (3675, 5954), (3822, 5725), (4550, 4809)]