21304010

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{571}}^1$

素因数の和:639

約数の個数: 64

約数和(自身を含む): 48432384

約数和(自身を除く): 27128374

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 41, 65, 70, 82, 91, 130, 182, 205, 287, 410, 455, 533, 571, 574, 910, 1066, 1142, 1435, 2665, 2855, 2870, 3731, 3997, 5330, 5710, 7423, 7462, 7994, 14846, 18655, 19985, 23411, 37115, 37310, 39970, 46822, 51961, 74230, 103922, 117055, 163877, 234110, 259805, 304343, 327754, 519610, 608686, 819385, 1521715, 1638770, 2130401, 3043430, 4260802, 10652005, 21304010]

約数ペア:

[(1, 21304010), (2, 10652005), (5, 4260802), (7, 3043430), (10, 2130401), (13, 1638770), (14, 1521715), (26, 819385), (35, 608686), (41, 519610), (65, 327754), (70, 304343), (82, 259805), (91, 234110), (130, 163877), (182, 117055), (205, 103922), (287, 74230), (410, 51961), (455, 46822), (533, 39970), (571, 37310), (574, 37115), (910, 23411), (1066, 19985), (1142, 18655), (1435, 14846), (2665, 7994), (2855, 7462), (2870, 7423), (3731, 5710), (3997, 5330)]