21391150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 96

約数和(自身を含む): 48211200

約数和(自身を除く): 26820050

約数列:

[1, 2, 5, 10, 11, 19, 22, 23, 25, 38, 46, 50, 55, 89, 95, 110, 115, 178, 190, 209, 230, 253, 275, 418, 437, 445, 475, 506, 550, 575, 874, 890, 950, 979, 1045, 1150, 1265, 1691, 1958, 2047, 2090, 2185, 2225, 2530, 3382, 4094, 4370, 4450, 4807, 4895, 5225, 6325, 8455, 9614, 9790, 10235, 10450, 10925, 12650, 16910, 18601, 20470, 21850, 22517, 24035, 24475, 37202, 38893, 42275, 45034, 48070, 48950, 51175, 77786, 84550, 93005, 102350, 112585, 120175, 186010, 194465, 225170, 240350, 388930, 427823, 465025, 562925, 855646, 930050, 972325, 1125850, 1944650, 2139115, 4278230, 10695575, 21391150]

約数ペア:

[(1, 21391150), (2, 10695575), (5, 4278230), (10, 2139115), (11, 1944650), (19, 1125850), (22, 972325), (23, 930050), (25, 855646), (38, 562925), (46, 465025), (50, 427823), (55, 388930), (89, 240350), (95, 225170), (110, 194465), (115, 186010), (178, 120175), (190, 112585), (209, 102350), (230, 93005), (253, 84550), (275, 77786), (418, 51175), (437, 48950), (445, 48070), (475, 45034), (506, 42275), (550, 38893), (575, 37202), (874, 24475), (890, 24035), (950, 22517), (979, 21850), (1045, 20470), (1150, 18601), (1265, 16910), (1691, 12650), (1958, 10925), (2047, 10450), (2090, 10235), (2185, 9790), (2225, 9614), (2530, 8455), (3382, 6325), (4094, 5225), (4370, 4895), (4450, 4807)]