28027755

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:270

約数の個数: 96

約数和(自身を含む): 61286400

約数和(自身を除く): 33258645

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 27, 35, 45, 49, 57, 63, 95, 105, 133, 135, 147, 171, 189, 223, 245, 285, 315, 399, 441, 513, 665, 669, 735, 855, 931, 945, 1115, 1197, 1323, 1561, 1995, 2007, 2205, 2565, 2793, 3345, 3591, 4237, 4655, 4683, 5985, 6021, 6615, 7805, 8379, 10035, 10927, 12711, 13965, 14049, 17955, 21185, 23415, 25137, 29659, 30105, 32781, 38133, 41895, 42147, 54635, 63555, 70245, 88977, 98343, 114399, 125685, 148295, 163905, 190665, 207613, 210735, 266931, 295029, 444885, 491715, 571995, 622839, 800793, 1038065, 1334655, 1475145, 1868517, 3114195, 4003965, 5605551, 9342585, 28027755]

約数ペア:

[(1, 28027755), (3, 9342585), (5, 5605551), (7, 4003965), (9, 3114195), (15, 1868517), (19, 1475145), (21, 1334655), (27, 1038065), (35, 800793), (45, 622839), (49, 571995), (57, 491715), (63, 444885), (95, 295029), (105, 266931), (133, 210735), (135, 207613), (147, 190665), (171, 163905), (189, 148295), (223, 125685), (245, 114399), (285, 98343), (315, 88977), (399, 70245), (441, 63555), (513, 54635), (665, 42147), (669, 41895), (735, 38133), (855, 32781), (931, 30105), (945, 29659), (1115, 25137), (1197, 23415), (1323, 21185), (1561, 17955), (1995, 14049), (2007, 13965), (2205, 12711), (2565, 10927), (2793, 10035), (3345, 8379), (3591, 7805), (4237, 6615), (4655, 6021), (4683, 5985)]