21157260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{277}}^1$

素因数の和:375

約数の個数: 96

約数和(自身を含む): 63517440

約数和(自身を除く): 42360180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 67, 76, 95, 114, 134, 190, 201, 228, 268, 277, 285, 335, 380, 402, 554, 570, 670, 804, 831, 1005, 1108, 1140, 1273, 1340, 1385, 1662, 2010, 2546, 2770, 3324, 3819, 4020, 4155, 5092, 5263, 5540, 6365, 7638, 8310, 10526, 12730, 15276, 15789, 16620, 18559, 19095, 21052, 25460, 26315, 31578, 37118, 38190, 52630, 55677, 63156, 74236, 76380, 78945, 92795, 105260, 111354, 157890, 185590, 222708, 278385, 315780, 352621, 371180, 556770, 705242, 1057863, 1113540, 1410484, 1763105, 2115726, 3526210, 4231452, 5289315, 7052420, 10578630, 21157260]

約数ペア:

[(1, 21157260), (2, 10578630), (3, 7052420), (4, 5289315), (5, 4231452), (6, 3526210), (10, 2115726), (12, 1763105), (15, 1410484), (19, 1113540), (20, 1057863), (30, 705242), (38, 556770), (57, 371180), (60, 352621), (67, 315780), (76, 278385), (95, 222708), (114, 185590), (134, 157890), (190, 111354), (201, 105260), (228, 92795), (268, 78945), (277, 76380), (285, 74236), (335, 63156), (380, 55677), (402, 52630), (554, 38190), (570, 37118), (670, 31578), (804, 26315), (831, 25460), (1005, 21052), (1108, 19095), (1140, 18559), (1273, 16620), (1340, 15789), (1385, 15276), (1662, 12730), (2010, 10526), (2546, 8310), (2770, 7638), (3324, 6365), (3819, 5540), (4020, 5263), (4155, 5092)]