21528690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{761}}^1$

素因数の和:835

約数の個数: 64

約数和(自身を含む): 55302912

約数和(自身を除く): 33774222

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 41, 46, 69, 82, 115, 123, 138, 205, 230, 246, 345, 410, 615, 690, 761, 943, 1230, 1522, 1886, 2283, 2829, 3805, 4566, 4715, 5658, 7610, 9430, 11415, 14145, 17503, 22830, 28290, 31201, 35006, 52509, 62402, 87515, 93603, 105018, 156005, 175030, 187206, 262545, 312010, 468015, 525090, 717623, 936030, 1435246, 2152869, 3588115, 4305738, 7176230, 10764345, 21528690]

約数ペア:

[(1, 21528690), (2, 10764345), (3, 7176230), (5, 4305738), (6, 3588115), (10, 2152869), (15, 1435246), (23, 936030), (30, 717623), (41, 525090), (46, 468015), (69, 312010), (82, 262545), (115, 187206), (123, 175030), (138, 156005), (205, 105018), (230, 93603), (246, 87515), (345, 62402), (410, 52509), (615, 35006), (690, 31201), (761, 28290), (943, 22830), (1230, 17503), (1522, 14145), (1886, 11415), (2283, 9430), (2829, 7610), (3805, 5658), (4566, 4715)]