21982380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7477}}^1$

素因数の和:7503

約数の個数: 72

約数和(自身を含む): 71609328

約数和(自身を除く): 49626948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7477, 14954, 22431, 29908, 37385, 44862, 52339, 74770, 89724, 104678, 112155, 149540, 157017, 209356, 224310, 261695, 314034, 366373, 448620, 523390, 628068, 732746, 785085, 1046780, 1099119, 1465492, 1570170, 1831865, 2198238, 3140340, 3663730, 4396476, 5495595, 7327460, 10991190, 21982380]

約数ペア:

[(1, 21982380), (2, 10991190), (3, 7327460), (4, 5495595), (5, 4396476), (6, 3663730), (7, 3140340), (10, 2198238), (12, 1831865), (14, 1570170), (15, 1465492), (20, 1099119), (21, 1046780), (28, 785085), (30, 732746), (35, 628068), (42, 523390), (49, 448620), (60, 366373), (70, 314034), (84, 261695), (98, 224310), (105, 209356), (140, 157017), (147, 149540), (196, 112155), (210, 104678), (245, 89724), (294, 74770), (420, 52339), (490, 44862), (588, 37385), (735, 29908), (980, 22431), (1470, 14954), (2940, 7477)]