21000700019

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1\times {\mathrm{227}}^1$

素因数の和:540

約数の個数: 64

約数和(自身を含む): 25151938560

約数和(自身を除く): 4151238541

約数列:

[1, 13, 19, 37, 53, 191, 227, 247, 481, 689, 703, 1007, 1961, 2483, 2951, 3629, 4313, 7067, 8399, 9139, 10123, 12031, 13091, 25493, 37259, 43357, 47177, 56069, 91871, 109187, 131599, 134273, 156403, 159581, 192337, 228589, 374551, 445147, 484367, 563641, 823783, 1604209, 1745549, 2074553, 2297921, 2500381, 2971657, 4869163, 5786911, 7116469, 8457793, 10709179, 20854717, 29872973, 30479971, 43660499, 85023077, 92514097, 109951309, 396239623, 567586487, 1105300001, 1615438463, 21000700019]

約数ペア:

[(1, 21000700019), (13, 1615438463), (19, 1105300001), (37, 567586487), (53, 396239623), (191, 109951309), (227, 92514097), (247, 85023077), (481, 43660499), (689, 30479971), (703, 29872973), (1007, 20854717), (1961, 10709179), (2483, 8457793), (2951, 7116469), (3629, 5786911), (4313, 4869163), (7067, 2971657), (8399, 2500381), (9139, 2297921), (10123, 2074553), (12031, 1745549), (13091, 1604209), (25493, 823783), (37259, 563641), (43357, 484367), (47177, 445147), (56069, 374551), (91871, 228589), (109187, 192337), (131599, 159581), (134273, 156403)]