21000716360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{93703}}^1$

素因数の和:94158

約数の個数: 64

約数和(自身を含む): 51004961280

約数和(自身を除く): 30004244920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 431, 520, 862, 1724, 2155, 3448, 4310, 5603, 8620, 11206, 17240, 22412, 28015, 44824, 56030, 93703, 112060, 187406, 224120, 374812, 468515, 749624, 937030, 1218139, 1874060, 2436278, 3748120, 4872556, 6090695, 9745112, 12181390, 24362780, 40385993, 48725560, 80771986, 161543972, 201929965, 323087944, 403859930, 525017909, 807719860, 1050035818, 1615439720, 2100071636, 2625089545, 4200143272, 5250179090, 10500358180, 21000716360]

約数ペア:

[(1, 21000716360), (2, 10500358180), (4, 5250179090), (5, 4200143272), (8, 2625089545), (10, 2100071636), (13, 1615439720), (20, 1050035818), (26, 807719860), (40, 525017909), (52, 403859930), (65, 323087944), (104, 201929965), (130, 161543972), (260, 80771986), (431, 48725560), (520, 40385993), (862, 24362780), (1724, 12181390), (2155, 9745112), (3448, 6090695), (4310, 4872556), (5603, 3748120), (8620, 2436278), (11206, 1874060), (17240, 1218139), (22412, 937030), (28015, 749624), (44824, 468515), (56030, 374812), (93703, 224120), (112060, 187406)]