21335970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 53032320

約数和(自身を除く): 31696350

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 61, 89, 122, 131, 178, 183, 262, 267, 305, 366, 393, 445, 534, 610, 655, 786, 890, 915, 1310, 1335, 1830, 1965, 2670, 3930, 5429, 7991, 10858, 11659, 15982, 16287, 23318, 23973, 27145, 32574, 34977, 39955, 47946, 54290, 58295, 69954, 79910, 81435, 116590, 119865, 162870, 174885, 239730, 349770, 711199, 1422398, 2133597, 3555995, 4267194, 7111990, 10667985, 21335970]

約数ペア:

[(1, 21335970), (2, 10667985), (3, 7111990), (5, 4267194), (6, 3555995), (10, 2133597), (15, 1422398), (30, 711199), (61, 349770), (89, 239730), (122, 174885), (131, 162870), (178, 119865), (183, 116590), (262, 81435), (267, 79910), (305, 69954), (366, 58295), (393, 54290), (445, 47946), (534, 39955), (610, 34977), (655, 32574), (786, 27145), (890, 23973), (915, 23318), (1310, 16287), (1335, 15982), (1830, 11659), (1965, 10858), (2670, 7991), (3930, 5429)]