21239910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12421}}^1$

素因数の和:12453

約数の個数: 48

約数和(自身を含む): 58134960

約数和(自身を除く): 36895050

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 90, 95, 114, 171, 190, 285, 342, 570, 855, 1710, 12421, 24842, 37263, 62105, 74526, 111789, 124210, 186315, 223578, 235999, 372630, 471998, 558945, 707997, 1117890, 1179995, 1415994, 2123991, 2359990, 3539985, 4247982, 7079970, 10619955, 21239910]

約数ペア:

[(1, 21239910), (2, 10619955), (3, 7079970), (5, 4247982), (6, 3539985), (9, 2359990), (10, 2123991), (15, 1415994), (18, 1179995), (19, 1117890), (30, 707997), (38, 558945), (45, 471998), (57, 372630), (90, 235999), (95, 223578), (114, 186315), (171, 124210), (190, 111789), (285, 74526), (342, 62105), (570, 37263), (855, 24842), (1710, 12421)]