20512690575

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{461}}^1\times {\mathrm{971}}^1$

素因数の和:1505

約数の個数: 96

約数和(自身を含む): 37419604992

約数和(自身を除く): 16906914417

約数列:

[1, 3, 5, 13, 15, 25, 39, 47, 65, 75, 141, 195, 235, 325, 461, 611, 705, 971, 975, 1175, 1383, 1833, 2305, 2913, 3055, 3525, 4855, 5993, 6915, 9165, 11525, 12623, 14565, 15275, 17979, 21667, 24275, 29965, 34575, 37869, 45637, 45825, 63115, 65001, 72825, 89895, 108335, 136911, 149825, 189345, 228185, 281671, 315575, 325005, 447631, 449475, 541675, 593281, 684555, 845013, 946725, 1140925, 1342893, 1408355, 1625025, 1779843, 2238155, 2966405, 3422775, 4225065, 5819203, 6714465, 7041775, 8899215, 11190775, 14832025, 17457609, 21038657, 21125325, 29096015, 33572325, 44496075, 63115971, 87288045, 105193285, 145480075, 273502541, 315579855, 436440225, 525966425, 820507623, 1367512705, 1577899275, 4102538115, 6837563525, 20512690575]

約数ペア:

[(1, 20512690575), (3, 6837563525), (5, 4102538115), (13, 1577899275), (15, 1367512705), (25, 820507623), (39, 525966425), (47, 436440225), (65, 315579855), (75, 273502541), (141, 145480075), (195, 105193285), (235, 87288045), (325, 63115971), (461, 44496075), (611, 33572325), (705, 29096015), (971, 21125325), (975, 21038657), (1175, 17457609), (1383, 14832025), (1833, 11190775), (2305, 8899215), (2913, 7041775), (3055, 6714465), (3525, 5819203), (4855, 4225065), (5993, 3422775), (6915, 2966405), (9165, 2238155), (11525, 1779843), (12623, 1625025), (14565, 1408355), (15275, 1342893), (17979, 1140925), (21667, 946725), (24275, 845013), (29965, 684555), (34575, 593281), (37869, 541675), (45637, 449475), (45825, 447631), (63115, 325005), (65001, 315575), (72825, 281671), (89895, 228185), (108335, 189345), (136911, 149825)]